四年级数学下册加法交换律和加法结合律计算题

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四年级下册口算题 加法交换律和结合律 1000题

四年级下册口算题 加法交换律和结合律 1000题

120 + 780 + 979 =534 + 502 + 266 =603 - 401 - 103 =592 + 308 + 44 =456 + 6 + 894 =819 - 157 - 243 =129 + 571 + 126 =587 + 115 - 187 =362 - 63 + 138 =992 + 231 + 69 =516 - 234 - 16 =21 + 249 - 1 =101 + 521 + 379 =149 + 414 + 551 =585 - 319 + 115 =883 - 716 - 84 =204 + 674 + 226 =696 + 954 + 204 =623 - 328 - 172 =287 + 304 + 513 =333 + 521 - 253 =858 + 349 - 838 =389 + 616 + 284 =365 - 29 - 305 =651 - 8 + 149 =874 - 16 - 34 =920 + 120 - 880 =661 - 2 + 239 =391 + 109 + 20 =565 - 291 - 165 =990 + 223 + 377 =709 + 207 + 593 =547 + 153 + 851 =697 + 5 + 5 =234 - 208 + 566 =210 + 771 + 29 =608 - 274 - 126 =107 - 36 - 54 =593 - 56 - 44 =942 - 345 - 342 =278 + 122 + 649 =337 - 196 - 104 =493 - 366 + 407 =96 + 704 + 111 =910 + 814 - 820 =练习范围:加法交换律和结合律 题数:100月日姓名: 分秒成绩:458 + 235 + 165 =627 - 16 - 567 =961 - 169 - 61 = 264 - 158 + 336 =152 + 526 + 148 =682 + 45 + 855 = 575 + 9 + 11 =526 + 252 + 248 =254 - 164 + 546 = 644 + 899 - 554 =347 + 553 + 555 =456 + 244 + 935 = 282 + 223 + 418 =243 - 164 + 657 =248 + 630 + 652 = 936 + 386 - 846 =398 + 648 - 98 =289 + 89 + 611 = 115 + 172 + 185 =981 - 76 - 381 =133 + 667 + 226 = 802 - 408 - 292 =936 - 93 - 707 =54 - 43 + 846 = 963 + 37 + 53 =918 - 428 - 272 =385 + 54 + 546 = 795 - 770 + 5 =701 - 472 - 1 =145 + 716 + 655 = 712 + 2 - 652 =776 - 205 - 195 =841 - 285 - 115 = 808 - 401 - 108 =215 + 271 - 115 =936 - 303 - 136 = 945 - 89 - 445 =94 + 159 + 241 =171 - 116 + 629 = 79 + 821 + 483 =866 - 311 - 189 =857 + 549 - 767 = 286 + 214 + 505 =126 + 455 + 474 =189 - 59 + 611 = 335 - 15 + 65 =563 + 137 + 838 =405 + 262 + 238 = 213 + 287 + 257 =526 + 802 + 74 =43 + 186 + 757 = 145 + 758 - 75 =667 + 33 + 309 =805 - 590 - 110 = 326 + 474 + 301 =511 - 482 + 289 = 5 + 695 + 559 =566 + 739 + 134 =252 + 248 + 472 =330 + 250 + 570 =827 - 357 - 427 =312 + 88 + 960 =185 + 841 - 95 =544 + 861 + 39 =620 - 356 - 144 =835 - 586 - 214 =78 + 442 + 2 =11 + 937 + 489 =981 + 365 + 35 =806 - 156 - 606 =680 + 584 + 316 =991 + 200 + 300 =27 + 43 + 862 =265 + 335 + 941 =570 + 412 + 188 =912 - 543 - 12 =460 - 250 + 440 =584 + 931 - 554 =210 + 290 + 850 =685 - 24 - 595 =835 - 39 - 661 =262 + 235 + 438 =474 + 268 + 132 =894 - 809 + 6 =893 - 586 - 214 =940 + 352 - 910 =53 + 17 + 566 =692 - 113 - 187 =749 - 472 - 28 =863 + 332 + 68 =358 + 542 + 356 =659 + 399 + 1 =929 + 153 + 347 =12 + 856 + 18 =366 + 919 + 534 =741 + 159 + 664 =449 + 921 - 429 =960 + 297 + 503 =211 + 240 - 171 =100 + 40 + 50 =练习范围:加法交换律和结合律 题数:100月日姓名: 分秒成绩:179 + 597 + 321 =763 - 308 - 292 =718 + 10 - 418 = 927 - 224 - 527 =872 - 278 - 372 =329 + 684 - 229 = 251 + 459 - 51 =207 + 710 + 190 =372 + 228 + 576 = 213 + 340 + 560 =488 + 353 + 547 =598 - 26 - 474 = 307 + 493 + 841 =946 - 442 - 246 =148 + 665 + 752 = 100 + 400 + 293 =983 - 349 - 551 =426 - 251 - 126 = 770 + 786 - 670 =749 + 4 + 296 =802 - 582 - 118 = 421 - 179 - 221 =281 + 219 + 319 =34 + 324 + 16 = 586 + 250 - 506 =147 - 17 - 23 =686 - 265 + 214 = 491 + 209 + 252 =561 + 289 + 411 =591 + 171 - 541 = 940 - 65 - 35 =258 + 442 + 304 =735 - 215 - 185 = 437 - 321 + 463 =289 - 168 + 311 =715 - 596 - 104 = 412 + 288 + 156 =851 - 9 - 11 =233 + 101 - 183 = 104 + 796 + 771 =537 + 296 + 163 =562 - 66 - 4 = 507 + 93 + 692 =99 + 201 + 260 =217 + 34 + 266 = 560 - 5 - 75 =932 - 446 - 154 =110 - 34 + 390 = 714 + 775 - 684 =925 - 88 - 835 =655 + 194 + 45 = 798 + 458 + 442 =949 - 363 - 149 =443 - 51 - 149 = 515 + 444 + 285 =50 + 89 + 211 =401 + 408 + 499 =791 - 40 - 191 =554 + 27 + 43 =60 + 40 + 33 =525 - 25 - 475 =787 - 196 - 587 =664 + 136 + 487 =649 + 605 - 569 =188 + 284 + 412 =234 + 531 + 369 =551 - 482 + 249 =740 - 626 - 40 =501 + 857 - 421 =542 - 501 + 158 =938 + 378 - 438 =128 + 939 + 172 =406 + 989 + 194 =393 + 53 + 307 =845 + 358 - 795 =453 + 111 + 689 =459 - 269 + 341 =347 + 153 + 71 =731 - 663 + 69 =922 - 696 - 4 =567 + 271 + 629 =985 - 762 - 185 =216 + 773 + 284 =671 - 588 + 229 =558 - 125 - 58 =766 - 199 - 366 =611 + 698 + 2 =903 + 287 - 3 =664 + 951 - 164 =634 + 494 + 266 =397 + 854 - 297 =319 + 481 + 563 =719 - 647 - 19 =118 + 323 + 182 =629 + 853 - 429 =682 + 546 - 82 =500 - 29 + 200 =442 + 58 + 373 =587 - 3 - 527 =552 + 679 - 52 =练习范围:加法交换律和结合律 题数:100月日姓名: 分秒成绩:286 + 563 + 114 =75 + 932 + 825 =832 - 106 - 432 = 911 - 321 - 311 =785 + 549 + 251 =412 + 655 - 342 = 461 + 439 + 804 =143 - 91 + 457 =477 - 476 + 323 = 429 - 15 - 359 = 4 + 696 + 183 = 4 + 740 + 296 = 10 + 890 + 435 =340 + 53 + 347 =737 - 7 - 337 = 592 + 387 + 308 =827 - 10 - 427 =431 + 702 - 411 = 388 + 402 - 338 =626 - 129 - 371 =987 - 18 - 82 = 425 + 475 + 311 =390 + 210 + 141 =319 + 168 - 229 = 18 + 225 + 382 =703 - 58 - 203 =172 + 51 + 528 = 559 + 241 + 276 =111 + 389 + 378 =994 - 747 - 53 = 479 + 405 - 379 =199 + 277 + 323 =958 - 200 - 200 = 838 + 56 - 138 =507 - 485 + 293 =150 + 450 + 56 = 243 - 86 - 114 =283 - 130 + 117 =36 + 528 + 864 = 526 - 32 - 38 =68 + 232 + 923 =179 - 177 + 721 = 627 - 114 + 73 =983 + 286 - 883 =726 + 269 + 531 = 834 + 12 + 68 =499 + 201 + 183 =606 - 293 - 307 = 628 - 233 - 128 =476 - 287 - 76 =924 - 59 - 124 = 759 - 603 + 141 =727 + 36 + 464 =36 + 875 + 464 = 398 - 33 + 102 =270 + 11 + 89 =469 - 190 - 169 =320 + 360 + 440 =692 + 588 + 108 = 6 + 932 + 44 =983 - 116 - 683 =11 + 289 + 332 =57 + 637 + 543 =343 + 899 + 57 =264 - 82 - 174 =897 - 15 - 85 =303 - 63 + 497 =267 + 433 + 362 =69 + 631 + 967 =92 + 15 + 15 =682 - 70 - 20 =133 + 667 + 928 =383 + 705 - 323 =626 - 357 + 74 =741 - 321 - 241 =324 + 212 - 304 =690 - 201 - 199 =752 + 233 - 652 =210 + 933 + 90 =666 + 234 + 618 =225 - 36 - 24 =540 - 486 + 160 =888 - 598 - 202 =964 + 578 + 22 =801 - 112 - 688 =774 - 331 + 126 =300 + 204 + 96 =580 + 454 + 446 =829 - 122 + 71 =706 - 596 - 106 =490 - 485 + 10 =465 - 115 + 35 =718 + 65 + 435 =10 + 790 + 176 =573 + 926 - 543 =956 + 388 + 212 =794 - 26 - 714 =560 - 260 + 40 =560 + 110 + 190 =498 - 80 - 20 =练习范围:加法交换律和结合律 题数:100月日姓名: 分秒成绩:670 - 23 - 580 =918 - 75 - 118 =522 + 178 + 386 = 827 + 926 - 427 =931 + 903 - 901 =694 + 116 + 206 = 909 - 315 - 509 =351 - 51 - 261 =718 - 176 - 424 = 48 + 913 + 2 =997 + 146 - 977 =681 + 307 + 293 = 257 + 543 + 343 =819 - 17 - 779 =883 - 133 - 483 = 140 - 32 - 48 =600 - 56 + 0 =768 + 877 - 268 = 904 - 11 - 19 =956 - 677 - 223 =330 - 18 - 72 = 798 - 247 - 498 =781 + 469 + 331 =851 - 284 - 316 = 972 - 430 - 470 =10 + 538 + 690 =145 - 13 + 155 = 777 + 123 + 309 =342 + 424 + 476 =713 - 445 - 13 = 927 + 299 + 1 =999 - 9 - 929 =968 - 814 - 68 = 72 + 444 - 22 =606 + 326 + 474 =660 + 468 + 40 = 269 - 95 + 231 =248 + 148 + 152 =799 + 101 + 528 = 536 + 764 - 516 =31 + 369 + 900 =726 - 472 + 74 = 566 - 59 - 466 =254 - 35 + 246 =160 + 228 + 472 = 188 - 16 - 24 =516 + 184 + 217 =704 - 640 - 60 = 735 - 474 - 26 =753 + 601 + 299 =582 + 158 + 542 = 907 - 233 - 467 =205 + 590 + 395 =942 + 356 - 342 = 719 + 142 + 358 =1000 - 279 - 521 =677 + 223 + 28 =883 - 68 - 22 =164 + 374 + 336 =113 - 51 + 87 =572 + 351 - 552 =537 - 257 + 363 =154 - 147 + 546 =130 - 5 - 120 =20 + 66 + 734 =611 - 571 + 289 =562 - 102 + 338 =200 + 195 - 180 =783 - 174 - 226 =708 - 113 + 192 =232 + 173 - 222 =505 - 449 - 51 =71 + 506 + 194 =657 - 47 - 43 =443 + 357 + 729 =693 - 9 + 207 =4 + 685 + 16 =829 - 119 + 71 =522 - 171 - 129 =922 - 168 - 332 =184 - 46 - 44 =312 + 188 + 500 =561 - 57 - 471 =697 - 592 + 103 =914 - 306 - 294 =727 - 68 - 32 =597 - 106 + 103 =106 + 652 - 56 =558 + 441 + 242 =678 - 75 + 222 =421 + 963 - 21 =921 - 3 - 67 =437 - 165 + 163 =633 - 354 - 46 =851 + 103 + 397 =517 + 11 + 39 =348 + 22 + 478 =635 + 840 - 235 =690 - 79 - 521 =319 + 566 + 81 =练习范围:加法交换律和结合律 题数:100月日姓名: 分秒成绩:893 + 25 + 25 =243 + 319 + 81 =490 + 110 + 830 = 878 + 42 + 458 = 6 + 54 + 575 =95 + 683 + 217 = 3 + 297 + 99 =828 + 299 - 748 =650 - 228 - 50 = 375 - 64 - 36 =158 + 542 + 795 =657 + 170 + 530 = 136 - 112 + 64 =497 + 419 - 197 =578 - 319 + 22 = 798 - 778 + 2 =145 + 355 + 283 =835 - 179 - 521 = 145 + 10 + 655 =299 - 197 + 501 =424 - 73 - 124 = 988 + 546 - 688 =722 - 562 - 22 =758 - 257 + 42 = 143 + 318 - 93 =210 + 627 + 73 =136 + 364 + 196 = 729 - 84 - 16 =506 - 36 - 426 = 5 + 95 + 45 = 130 + 26 + 470 =608 + 780 + 20 =716 - 139 - 561 = 161 - 159 + 239 =706 + 194 + 314 =992 + 155 + 745 = 67 + 533 + 768 =684 + 644 + 56 =284 + 216 + 200 = 139 + 661 + 681 =395 - 73 - 127 =671 - 388 + 29 = 900 - 271 - 429 =544 - 38 - 494 =122 + 678 + 83 = 791 + 50 + 10 =489 - 295 + 311 =8 + 392 + 47 = 346 + 773 - 266 =888 + 748 - 808 =624 - 352 - 224 = 478 - 340 + 22 =840 - 175 - 125 =710 - 399 - 110 = 798 - 336 + 2 =362 + 646 - 332 =997 + 685 + 215 =918 + 468 - 818 =108 - 55 + 192 =774 + 579 + 221 =354 + 8 + 392 =272 + 515 + 285 =959 - 395 - 259 =400 + 947 + 400 =62 + 147 + 238 =207 + 493 + 238 =823 - 172 - 528 =234 + 15 + 15 =950 + 728 + 72 =114 + 186 + 479 =866 - 125 - 466 =377 - 281 - 77 =949 + 729 - 549 =718 - 28 - 172 =181 + 319 + 519 =730 - 133 - 467 =397 + 303 + 17 =507 + 393 + 146 =69 + 431 + 682 =599 + 301 + 384 =974 - 143 - 557 =760 - 118 - 382 =117 + 275 + 225 =230 + 95 + 205 =218 - 73 - 18 =139 + 37 + 763 =57 + 97 + 243 =171 - 4 - 76 =521 + 79 + 767 =681 - 500 - 81 =670 - 34 - 470 =304 + 296 + 97 =218 + 82 + 737 =496 + 104 + 970 =215 + 182 + 285 =533 - 48 - 152 =518 + 15 + 82 =472 - 180 + 28 =397 + 3 + 745 =594 - 383 + 306 =练习范围:加法交换律和结合律 题数:100月日姓名: 分秒成绩:787 - 185 - 387 =644 - 225 - 375 =919 + 588 + 312 = 879 + 496 - 479 =320 + 147 + 253 =738 + 62 + 761 = 663 - 627 + 37 =576 - 84 + 224 =917 - 890 - 10 = 57 + 33 + 962 =299 + 101 + 543 =304 + 148 + 52 = 150 + 344 + 56 =216 + 436 + 484 =719 - 223 - 177 = 89 + 811 + 809 =60 + 0 + 510 =637 - 377 + 163 = 53 + 145 + 17 =695 - 301 - 299 =341 + 182 - 141 = 760 + 229 + 271 =411 - 55 - 45 =140 - 51 - 49 = 551 - 10 - 461 =248 + 270 + 652 =44 + 643 + 46 = 168 + 250 + 132 =846 - 91 - 509 =628 - 163 - 228 = 376 + 63 - 306 =35 + 365 + 536 =567 - 236 - 64 = 491 + 177 + 9 =472 + 38 - 462 =229 - 220 + 271 = 505 - 86 + 295 =413 - 61 + 187 =168 + 259 + 232 = 27 + 113 + 473 =679 - 285 - 179 =400 + 349 - 390 = 168 - 44 - 56 =892 - 296 - 192 =554 + 420 + 246 = 177 + 323 + 781 =655 - 165 - 455 =672 + 128 + 578 = 865 - 426 + 35 =418 + 757 + 82 =439 + 474 + 461 = 379 - 75 - 299 =782 - 216 - 184 =917 - 317 - 583 = 819 + 381 + 219 =893 + 778 + 122 =925 + 180 + 620 =85 + 382 + 215 =689 + 370 + 11 =31 + 43 + 469 =834 + 139 + 761 =145 + 755 + 828 =969 - 497 - 103 =475 - 13 - 425 =839 - 89 - 311 =939 - 226 - 674 =217 + 13 + 37 =671 - 29 - 51 =484 - 370 + 316 =700 + 566 + 34 =234 + 298 + 202 =898 - 413 - 87 =653 + 455 - 453 =790 - 264 - 390 =355 - 224 + 545 =44 + 506 + 856 =628 + 172 + 571 =924 - 450 - 350 =164 - 60 + 636 =798 - 140 - 60 =594 - 140 - 160 =839 + 350 + 50 =190 + 445 + 410 =592 + 182 - 552 =913 + 712 - 863 =886 + 14 + 808 =366 - 106 + 234 = 5 + 75 + 43 =195 - 36 - 34 =424 + 889 + 376 =50 + 351 - 30 =526 + 4 + 86 =618 - 520 + 182 =906 + 814 - 706 =66 + 534 + 874 =60 - 3 - 47 =403 + 504 - 383 =742 - 6 - 54 =324 + 561 - 284 =358 + 342 + 633 =练习范围:加法交换律和结合律 题数:100月日姓名: 分秒成绩:905 + 875 - 205 =308 - 19 - 108 =508 + 414 + 292 = 306 + 167 + 394 =428 + 15 + 785 =495 + 614 - 445 = 467 + 181 + 619 =785 - 420 - 185 =325 + 197 + 103 = 275 + 665 - 265 =593 - 481 + 307 =837 - 529 - 71 = 265 + 873 + 27 =291 - 39 + 509 =715 - 84 + 85 = 95 + 860 + 705 =325 + 175 + 822 =545 - 474 + 355 = 218 + 630 - 178 =34 + 61 + 666 =938 + 371 + 429 = 455 - 171 + 245 =871 - 430 - 370 =553 - 32 - 453 = 476 + 790 + 24 =68 - 12 - 18 =364 + 111 + 136 = 669 - 432 + 31 =642 + 158 + 222 =826 - 10 - 790 = 875 - 185 - 75 =496 + 204 + 29 =655 - 603 + 45 = 359 + 241 + 278 =891 - 805 + 9 =864 - 93 - 707 = 3 + 77 + 140 =512 + 238 + 162 =934 - 31 - 169 = 12 + 278 + 588 =713 - 13 - 693 =235 + 818 + 165 = 416 - 97 + 384 =806 - 56 - 44 =768 - 296 + 32 = 184 + 267 + 433 =561 + 32 - 501 =113 + 164 + 387 = 686 + 972 - 636 =335 + 326 - 235 =730 + 787 + 113 = 398 + 202 + 904 =319 - 179 - 21 =596 + 433 + 367 = 4 + 596 + 173 =438 - 128 + 262 =509 + 291 + 334 =186 + 250 + 350 =52 + 940 + 28 =652 - 38 - 592 =812 + 547 + 353 =983 - 681 - 83 =136 + 364 + 223 =30 + 304 + 196 =535 - 285 + 365 =756 - 522 - 56 =700 - 27 + 200 =4 + 165 + 335 =975 - 71 - 775 =476 - 93 + 24 =835 - 516 - 135 =991 - 11 - 191 =150 - 80 + 750 =749 - 216 - 84 =652 + 290 + 610 =427 - 145 + 173 =560 - 297 - 103 =842 - 78 - 142 =473 - 399 + 127 =679 - 23 - 379 =671 - 210 - 190 =115 - 10 + 385 =715 - 7 - 705 =665 - 66 + 35 =138 - 55 + 162 =872 - 498 - 72 =945 - 767 - 45 =943 - 600 - 200 =97 + 227 + 173 =575 - 515 + 225 =873 - 77 - 673 =750 - 555 - 145 =360 + 40 + 99 =410 + 90 + 134 =204 + 792 - 104 =462 + 238 + 401 =801 - 95 - 101 =343 + 312 + 88 =484 + 316 + 634 =192 + 8 + 961 =练习范围:加法交换律和结合律 题数:100月日姓名: 分秒成绩:885 - 238 - 462 = 3 + 729 + 797 =523 - 186 + 177 = 138 + 981 + 162 =578 - 62 - 138 =745 + 651 + 249 = 934 - 31 - 834 =146 + 819 + 81 =789 - 205 - 89 = 97 + 19 + 71 =214 + 925 - 204 =489 - 40 - 160 = 559 - 106 - 194 =17 + 283 + 860 =367 - 128 + 433 = 942 - 167 - 642 =10 + 146 + 80 =382 - 194 + 118 = 78 + 13 + 12 =741 - 378 - 122 =127 + 118 + 382 = 129 + 674 + 471 =19 + 766 + 781 =723 + 234 - 323 = 558 - 300 - 158 =164 + 698 - 124 =727 - 465 + 73 = 189 + 211 + 875 =67 + 633 + 364 =668 + 423 + 177 = 632 + 421 + 168 =82 + 861 - 52 =981 - 23 - 911 = 417 + 657 + 383 =576 - 78 - 276 =33 + 667 + 537 = 756 - 501 - 56 =152 + 378 - 62 =190 + 240 - 160 = 461 + 543 - 451 =870 - 199 - 301 =855 + 662 + 238 = 895 + 15 - 855 =178 - 165 + 222 =337 + 997 + 263 = 25 + 463 + 237 =81 + 768 + 32 =981 + 452 - 281 = 65 - 15 + 5 =942 - 25 - 42 =213 + 587 + 96 = 505 - 17 - 483 =130 - 60 + 70 =884 - 49 - 484 = 805 + 782 - 605 =615 + 86 + 185 =81 - 23 + 319 =621 - 150 + 79 =228 - 211 + 172 =966 - 361 - 539 =656 - 215 - 285 =235 + 253 + 265 =357 - 274 - 26 =829 - 104 - 196 =379 + 15 + 885 =712 - 686 + 88 =535 - 428 + 365 =680 - 65 - 335 =89 + 432 - 69 =189 - 36 - 119 =262 + 187 + 213 =656 + 244 + 376 =282 - 134 + 418 =919 + 194 + 206 =811 + 276 + 124 =402 - 369 - 2 =956 + 627 - 656 =554 - 409 + 346 =419 + 381 + 249 =409 + 113 + 391 =472 + 688 + 228 =662 + 462 - 462 =939 - 241 - 559 =283 + 317 + 10 =408 - 170 + 92 =5 + 348 + 95 =519 + 82 + 618 =752 - 552 + 148 =576 - 143 - 376 =27 + 352 + 23 =782 - 51 - 149 =195 + 665 - 145 =379 + 161 - 309 =745 + 681 + 55 =139 + 661 + 380 =784 - 64 - 84 =969 - 272 - 369 =972 - 220 - 672 =951 - 490 - 10 =28 + 281 + 2 =练习范围:加法交换律和结合律 题数:100月 日姓名: 分秒成绩:321 + 933 + 279 =543 - 175 - 343 =286 + 173 - 206 = 226 - 115 + 474 =614 + 33 + 67 =581 + 253 + 47 = 449 + 251 + 788 =324 + 276 + 519 =796 + 333 - 196 = 594 - 406 + 6 =784 - 653 - 47 =676 + 224 + 276 = 958 - 106 - 258 =25 + 963 + 5 =266 + 610 + 434 = 193 + 607 + 958 =591 - 372 + 209 =722 - 283 + 78 = 535 + 265 + 275 =597 + 303 + 778 =409 + 876 + 291 = 669 - 177 - 223 =953 - 383 - 253 =338 + 206 + 94 = 968 - 117 - 583 =701 - 698 - 1 =785 + 115 + 144 = 558 - 56 + 42 =98 + 52 + 202 =40 + 361 + 50 = 890 - 127 + 10 =525 - 501 + 75 =11 + 834 + 689 = 652 - 54 - 592 =649 + 305 - 579 =89 + 558 + 611 = 823 - 42 - 758 =75 + 305 + 825 =105 + 881 + 595 = 772 + 686 - 572 =809 - 290 - 309 =237 + 212 + 588 = 105 + 295 + 220 =804 - 647 - 104 =376 - 66 + 124 = 389 + 472 + 411 =944 - 385 - 15 =79 + 660 + 140 = 729 + 75 + 71 =514 - 46 + 86 =574 - 411 - 89 = 325 + 826 - 225 =873 + 380 + 420 =168 + 82 + 18 = 692 + 108 + 286 =943 + 192 + 8 =470 + 930 - 440 =165 + 777 + 335 =703 - 73 - 623 =507 + 981 + 393 =364 + 156 + 436 =527 - 177 - 323 =749 + 974 - 549 =767 + 775 - 727 =268 + 190 + 432 =651 - 514 + 49 =829 - 74 - 726 =881 - 38 - 281 =362 - 181 - 162 =569 - 329 + 31 =243 - 156 + 457 =997 - 439 - 161 =100 + 200 + 871 =574 - 360 + 226 =626 + 55 - 616 =606 + 294 + 337 =922 - 191 - 222 =689 - 72 + 111 =165 - 29 - 31 =384 + 917 + 516 =667 + 3 + 397 =768 + 731 - 738 =930 + 63 + 437 =94 + 291 - 34 =227 + 442 + 358 =715 - 274 - 215 =530 + 550 - 130 =276 + 145 - 206 =1 + 19 + 472 =77 + 579 + 723 =485 - 104 - 196 =113 - 20 + 587 =748 + 647 + 153 =728 - 287 - 128 =16 + 383 + 484 =471 + 510 + 90 =595 + 212 - 525 =289 - 4 - 199 =205 - 50 + 95 =243 + 157 + 102 =练习范围:加法交换律和结合律 题数:100月日姓名: 分秒成绩:765 + 692 + 35 =203 + 83 + 517 =688 + 335 - 608 = 1 + 402 + 99 =695 - 623 + 5 =747 + 630 - 347 = 37 + 43 + 283 =746 - 270 + 154 =749 + 52 + 51 = 946 + 94 - 746 =511 - 2 - 411 =722 + 126 + 674 = 189 - 94 + 411 =918 - 113 - 787 =578 + 240 - 528 = 48 + 847 + 53 =825 - 744 + 75 =126 + 191 + 309 = 623 - 380 + 277 =684 - 8 - 32 =793 - 347 + 7 = 852 + 785 - 52 =777 + 153 + 123 =804 - 14 - 754 = 537 - 121 - 379 =749 - 564 - 136 =683 + 247 + 217 = 818 - 784 - 16 =575 + 921 - 475 =94 + 506 + 327 = 928 - 18 - 52 =730 - 412 - 88 =664 + 629 - 584 = 728 + 802 - 228 =124 + 748 + 176 =451 + 575 + 225 = 246 + 192 + 608 =382 - 39 - 292 =787 - 195 + 13 = 948 + 405 + 195 =971 - 13 - 387 =954 - 469 - 454 = 262 + 773 - 162 =628 + 336 - 588 =655 + 45 + 229 = 535 + 310 - 35 =34 + 159 + 36 =798 + 508 + 292 = 299 + 380 + 401 =47 + 853 + 877 =72 + 497 + 428 = 643 + 192 + 608 =58 + 32 + 711 =757 - 46 - 667 = 965 + 672 - 565 =。

四年级下册数学加法交换律和结合律专项练习题

四年级下册数学加法交换律和结合律专项练习题

四年级下册数学加法交换律和结合律专项练习题TTA standardization office【TTA 5AB- TTAK 08- TTA 2C】四年级下册数学加法交换律、结合律及减法的性质专项练习题姓名:一、填空1、两个加数(),和(),这叫做加法交换律。

用字母表示为()。

2、先把()相加,或者先把()相加,和()。

这叫做加法结合律。

用字母表示为()。

3、一个数连续减去两个数,等于()减去这两个数()。

这叫做()用字母表示为()4、在连减算式里,可以任意交换()之间的位置。

a -b-c = a -( )-b5、根据运算定律在方框里填上适当的数或字母。

63+a=□+□? 369+d+142=369+(□+142)(28+47)+53=28+(□+□) 603+(97+a)=(603+□)+□85-(a+c)=85-□-□ b-(65-a)= □+□-□ 43-(□-25)=□-c+□88-m-56=88-(□+□) (87+n+m)-20=(87+m)+( □-20)二、下面的算式分别运用了什么运算定律?把它填写在括号里。

175+281=281+175() 452+364+136=452+(364+136)()23+351+177=(23+177)+351() 44+68+36+32=(44+36)+(68+32)()三、怎样简便就怎样计算。

598+99 396—28—22 355+260+140+245 109+(291—176)43+189+57 591+482+118 986+1999 216+89+11 473+79—63 645—180—245 1022-478-422 987-(287+135) 478-256-144672-36+64 36+64-36+64 487-287-139-61 500-257-34-1432000-368-132 1814-378-422 155+264+36+44 698-291-9568-(68+178) 561-19+58 382+165+35-82 155+256+45-98 236+189+64 759—126—259 569—256—44 514+189—214369—256+156 512+(373—212) 228+(72+189) 169+19928+45+72 123+38+62 1+13+85+7+99 100-57-23 37+56+63+44 275+46+25 1457-(185+457)68+24+32+76425+64+75+36 235+102 608-(208-149) 725-(350-275)845-(401-155)902-98 900-(500-109) 602-(433-298) 729-(395+171)634-273+466-127 504+273-304-1733+99+999+9999四、拓展1、用6、7、8、9编4道得数相同的两位数加两位数的算式。

四年级加法交换和结合律、乘法交换律、结合律、分配律练习

四年级加法交换和结合律、乘法交换律、结合律、分配律练习

加法结合律:多个加数相加,可以任意两个加数先加。

a+b+c= a+(b+c)连减律:连减两个数,可以减去这两个数的和(减去两个数的和,可以连减这两个数)。

a—b—c= a—(b+c)可以任意交换减数的位置。

a—b—c= a—c—b598+99 396—28—22 355+260+140+245109+(291—176)43+189+57 591+482+118986+1999 216+89+11 473+79—63645—180—245 1022-478-422 987-(287+135)478-256-144 672-36-64 36+64-36+64487-287-139-61 500-257-143 2000-368-1321814-378-422 155+264+36+45 698-291-9568-(68+178) 382+165+35-82 169+199184+507 236+189+64 759—126—259569—256—44 514+189—214 228+(72+189)28+45+72 123+38+62 1+13+85+7+99100-57-23 37+56+63+44 574-3981457-(185+457) 68+24+32+76 425+64+75+36235+102 902-98 634-273+466-127(337+464)+536 727-194-106 374-(35+174)765-(96+65)247-185+53-15 384-297乘法结合律:多个因数相乘,可以任意两个因数先乘。

a×b×c= a×(b×c)(25×4=100、125×8=1000)连除律:连除以两个数,可以除以这两个数的积(除以两个数的积,可以连除以这两个数)。

a÷b÷c= a÷(b×c)可以任意交换除数的位置。

四年级数学下册加法交换律和加法结合律计算题

四年级数学下册加法交换律和加法结合律计算题

1.加法交换律:加法交换律是指在加法运算中,两个数的加法顺序可以互换,结果不变。

例如:3+5=5+3=82.加法结合律:加法结合律是指在连续的三个数相加时,可以任意选择其中的两个数先相加,然后再与另一个数相加,结果不变。

例如:(3+5)+7=3+(5+7)=15以下是一些加法交换律和加法结合律的计算题:题目1:计算下列各式的值:(1)25+48+12(2)66+14+35(3)89+37+12+45解答:(1)25+48+12=(12+25)+48=37+48=85(2)66+14+35=66+(35+14)=66+49=115(3)89+37+12+45=(89+45)+(12+37)=134+49=183题目2:运用加法交换律,计算下列各式的值:(1)132+256+57(2)85+329+46解答:(1)132+256+57=(57+132)+256=189+256=445(2)85+329+46=(329+46)+85=375+85=460题目3:运用加法结合律,计算下列各式的值:(1)78+49+25(2)265+38+17解答:(1)78+49+25=(78+49)+25=127+25=152(2)265+38+17=265+(38+17)=265+55=320题目4:综合运用加法交换律和加法结合律,计算下列各式的值:(1)37+64+92+27(2)45+63+28+51解答:(1)37+64+92+27=(37+92)+(64+27)=129+91=220(2)45+63+28+51=(45+28)+(63+51)=73+114=187通过以上练习,我们可以更加灵活地运用加法交换律和加法结合律来简化计算,提高计算效率。

四年级加法交换和结合律、乘法交换律、结合律、分配律练习

四年级加法交换和结合律、乘法交换律、结合律、分配律练习

加法结合律:多个加数相加,可以任意两个加数先加。

a+b+c= a+(b+c)连减律:连减两个数,可以减去这两个数的和(减去两个数的和,可以连减这两个数)。

a—b—c= a—(b+c)可以任意交换减数的位置。

a—b—c= a—c—b598+99 396—28—22 355+260+140+245109+(291—176) 43+189+57 591+482+118986+1999 216+89+11 473+79—63 645—180—245 1022-478-422 987-(287+135)478-256-144 672-36-64 36+64-36+64487-287-139-61 500-257-143 2000-368-1321814-378-422 155+264+36+45 698-291-9568-(68+178) 382+165+35-82 169+199184+507 236+189+64 759—126—259569—256—44 514+189—214 228+(72+189)28+45+72 123+38+62 1+13+85+7+99100-57-23 37+56+63+44 574-3981457-(185+457) 68+24+32+76 425+64+75+36235+102 902-98 634-273+466-127(337+464)+536 727-194-106 374-(35+174)765-(96+65) 247-185+53-15 384-297乘法结合律:多个因数相乘,可以任意两个因数先乘。

a×b×c= a×(b×c)(25×4=100、125×8=1000)连除律:连除以两个数,可以除以这两个数的积(除以两个数的积,可以连除以这两个数)。

a÷b÷c= a÷(b×c)可以任意交换除数的位置。

小学四年级数学下册加法交换律和加法结合律计算题(通用)

小学四年级数学下册加法交换律和加法结合律计算题(通用)
67+25+33+75528―53―47 545―167―145
487―187―139―61 169―25―25―5060+255+40
282+41+159 548+52+468800―138―162
二、解决问题。(40分)
1、小明要从A地到E地,他坐火车需要行驶多少千米?
2、水果店一共328箱梨,第一天卖出72箱,第二天卖出228箱,还剩多少箱梨?
3、某个风景区要修一条公路,第一天修了141米,第二天修了123米,第三天比第二天多修了19米,三天一共修了多少米?
4、某商场第一至第四季度分别售出冰箱269台、67台、331台和233台。该商场全年共售出冰箱多少台?
136千米211千米189千米164千米3某个风景区要修一条公路第一天修了141米第二天修了123米第三天比第二天多修了19米三天一共修了多少米
运算定律(加法交换律和加法结合律)
班别: 姓名: 得分:
一、计算下面各题,怎样简便就怎样计算。(60分)
425+14+186 75+168+25245+180+20+155

四年级下册数学加法交换律和结合律专项练习题

四年级下册数学加法交换律和结合律专项练习题

四年级下册数学加法交换律、结合律及减法的性质专项练习题姓名:一、填空1、两个加数(),和(),这叫做加法交换律。

用字母表示为()。

2、先把()相加,或者先把()相加,和()。

这叫做加法结合律。

用字母表示为()。

3、一个数连续减去两个数,等于()减去这两个数()。

这叫做()用字母表示为()4、在连减算式里,可以任意交换()之间的位置。

a -b-c =a -( )-b5、根据运算定律在方框里填上适当的数或字母。

;63+a=□+□369+d+142=369+(□+142)(28+47)+53=28+(□+□)603+(97+a)=(603+□)+□85-(a+c)=85-□-□b-(65-a)= □+□-□43-(□-25)=□-c+□88-m-56=88-(□+□) (87+n+m)-20=(87+m)+( □-20)二、下面的算式分别运用了什么运算定律把它填写在括号里。

175+281=281+175()452+364+136=452+(364+136)()23+351+177=(23+177)+351 ()44+68+36+32=(44+36)+(68+32)()三、怎样简便就怎样计算。

598+99 396—28—22 355+260+140+245 109+(291—176)—43+189+57 591+482+118 986+1999 216+89+11 473+79—63645—180—245 1022-478-422 987-(287+135)478-256-144}672-36+64 36+64-36+64 487-287-139-61 500-257-34-1432000-368-132 1814-378-422 155+264+36+44 698-291-9:568-(68+178)561-19+58 382+165+35-82 155+256+45-98236+189+64 759—126—259 569—256—44 514+189—214(369—256+156 512+(373—212)228+(72+189) 169+19928+45+72 123+38+62 1+13+85+7+99 100-57-23 37+56+63+44、275+46+25 1457-(185+457) 68+24+32+76 425+64+75+36235+102 608-(208-149) 725-(350-275) 845-(401-155) ,902-98 900-(500-109) 602-(433-298) 729-(395+171)634-273+466-127 504+273-304-173 3+99+999+9999\四、拓展1、用6、7、8、9编4道得数相同的两位数加两位数的算式。

四年级下册数学加法交换律和结合律专项练习题

四年级下册数学加法交换律和结合律专项练习题

一、填空1、两个加数(相加),交换两个加数的位置,和(不变),这叫做加法交换律。

用字母表示为(a+b二b+c)。

2、先把(前两个数)相加,或者先把(后两个数)相加,和(不变)。

这叫做加法结合律。

用字母表示为(a+z+x=a+(z+x))。

3、一个数持续减去两个数,等于()减去这两个数()。

这叫做()用字母表示为()4、在连减算式里,可以任意交换(两个数)之间的位置。

a—b—c=a—(c)—b5、根据运算定律在方框里填上合适的数或字母。

63+a=a+63369+d+142=369+(d+142)(28+47)+53=28+(47+53)603+(97+a)=(603+97)+a85-(a+c)=85-a-cb-(65-a)=b+65-a43-(c- 25)=43-c+2588-m-56=88-(m+56)(87+n+m)-20=(87+m)+(n-20)二、下面的算式分别运用了什么运算定律?把它填写在括号里。

175+281=281+175(加法交换律)452+364+136=452+(364+136)(加法结合律)23+351+177=(23+177)+351(加法结合律,加法交换律)44+68+36+32=(44+36)+(68+32)(加法交换律,加法结合律)三、怎样简易就怎样计算。

=697=396-(28+22)=(==396-50===346==43+189+57591+482+118986+1999216+89+11473+79—63645—180—2451022-478-422987-(287+135)478-256-144672-36+6436+64-36+64487-287-139-61500-257-34-143568-(68+178)561-19+58382+165+35-82155+256+45-98236+189+64759—126—259569—256—44514+189—214369—256+156512+(373—212)228+(72+189)169+199275+46+251457-(185+457)68+24+32+76425+64+75+36235+102608-(208-149)725-(350-275)-155)902-98900-(500-109)602-(433-298)(395+171)845-(401729-四、拓展1、用6、7、8、9编4道得数相同的两位数加两位数的算式。

四年级数学下册加法交换律和加法结合律计算题

四年级数学下册加法交换律和加法结合律计算题

运算定律(加法交换律和加法结合律)班别:姓名:得分:一、计算下面各题,怎样简便就怎样计算。

(60分)425+14+186 75+168+25 245+180+20+15567+25+33+75 528―53―47 545―167―145487―187―139―61 169―25―25―50 60+255+40282+41+159 548+52+468 800―138―162二、解决问题。

(40分)1、小明要从A地到E地,他坐火车需要行驶多少千米?2、水果店一共328箱梨,第一天卖出72箱,第二天卖出228箱,还剩多少箱梨?3、某个风景区要修一条公路,第一天修了141米,第二天修了123米,第三天比第二天多修了19米,三天一共修了多少米?4、某商场第一至第四季度分别售出冰箱269台、67台、331台和233台。

该商场全年共售出冰箱多少台?人教版三年级下册数学期中试卷一、填空1、地图上是按上()下()左()右()绘制的。

2、我国的五座名山,它们分别是()嵩山()泰山()衡山()华山()恒山。

3、一年有()个月,半年有()个月,平年全年有()天,闰年全年有()天。

4、2000年是()年,二月有()天,2007年是()年,二月有()天。

5、今年9月10日是第27个教师节,教师节是()年设立的。

6、16时是下午()时,凌晨4:00是()时;20时是晚上()时,晚上10时是()时。

7、陈红已满6岁,只过了两个生日,他是()出生的。

8、在除法中,0除以任何不是0的数都得()。

9、861÷7这这道题的商是()位数,商得最高位是()位,商是()。

10、小明要到一座大楼的第6层找人,如果从1楼到3楼要20秒,那么他以相同的速度从3层到6层需要()秒。

二、判断(对的打“√”错的打“×”)1、小明早上7:30上学。

上午在校学习4小时,这两句话都表示时刻。

()2、闰年比平年多1天。

()3、24时和0时表示同一时刻。

四年级下册数学加法交换律和结合律专项练习题

四年级下册数学加法交换律和结合律专项练习题

数学四年级下册加法交换律、结合律及减法的性质专项练习题一、下面的算式分别运用了什么运算定律?把它填写在括号里。

175+281=281+175()452+364+136=452+(364+136)()23+351+177=(23+177)+351()44+68+36+32=(44+36)+(68+32)()二、填空1、两个加数(),和(),这叫做加法交换律。

用字母表示为()。

2、先把()相加,或者先把()相加,和()。

这叫做加法结合律。

用字母表示为()。

3、一个数连续减去两个数,等于()减去这两个数()。

这叫做()用字母表示为()4、在连减算式里,可以任意交换()之间的位置。

a -b-c =a -( )-b5、根据运算定律在方框里填上适当的数或字母。

63+a=□+□ 369+d+142=369+(□+142)(28+47)+53=28+(□+□) 603+(97+a)=(603+□)+□85-(a+c)=85-□-□ b-(65-a)= □+□-□ 43-(□-25)=□-c+□88-m-56=88-(□+□) (87+n+m)-20=(87+m)+( □-20)三、怎样简便就怎样计算。

598+99 396—28—22 355+260+140+245 109+(291—176)43+189+57591+482+118 986+1999 216+89+11 473+79—63 645—180—2451022-478-422 987-(287+135)478-256-144 672-36+64 36+64-36+64487-287-139-61 500-257-34-143 2000-368-132 1814-378-422155+256+45-98 236+189+64 759—126—259 569—256—44 514+189—214369—256+156 512+(373—212)228+(72+189)169+19928+45+72123+38+621+13+85+7+99 100-57-2337+56+63+44275+46+25 1457-(185+457)68+24+32+76425+64+75+36235+102 608-(208-149) 725-(350-275) 845-(401-155)902-98 900-(500-109) 602-(433-298) 729-(395+171)634-273+466-127 504+273-304-173 3+99+999+9999四、拓展1、用6、7、8、9编4道得数相同的两位数加两位数的算式。

四年级下册数学 口算题 (加法交换律和结合律) 1000题

四年级下册数学 口算题 (加法交换律和结合律) 1000题

月日姓名:练习范围:加法交换律和结合律题数:100 分秒成绩:615 + 86 + 185 = 81 - 23 + 319 = 621 - 150 + 79 = 228 - 211 + 172 = 966 - 361 - 539 = 656 - 215 - 285 = 235 + 253 + 265 = 357 - 274 - 26 = 829 - 104 - 196 = 379 + 15 + 885 = 712 - 686 + 88 = 535 - 428 + 365 = 680 - 65 - 335 = 89 + 432 - 69 = 189 - 36 - 119 = 262 + 187 + 213 = 656 + 244 + 376 = 282 - 134 + 418 = 919 + 194 + 206 = 811 + 276 + 124 = 402 - 369 - 2 = 956 + 627 - 656 = 554 - 409 + 346 = 419 + 381 + 249 = 409 + 113 + 391 = 472 + 688 + 228 = 662 + 462 - 462 = 939 - 241 - 559 = 283 + 317 + 10 = 408 - 170 + 92 = 5 + 348 + 95 = 519 + 82 + 618 = 752 - 552 + 148 = 576 - 143 - 376 = 27 + 352 + 23 = 782 - 51 - 149 = 195 + 665 - 145 = 379 + 161 - 309 = 745 + 681 + 55 = 139 + 661 + 380 = 784 - 64 - 84 = 969 - 272 - 369 = 972 - 220 - 672 = 951 - 490 - 10 = 28 + 281 + 2 =321 + 933 + 279 = 543 - 175 - 343 = 286 + 173 - 206 = 226 - 115 + 474 = 614 + 33 + 67 = 581 + 253 + 47 = 449 + 251 + 788 = 324 + 276 + 519 = 796 + 333 - 196 = 594 - 406 + 6 = 784 - 653 - 47 = 676 + 224 + 276 = 958 - 106 - 258 = 25 + 963 + 5 = 266 + 610 + 434 = 193 + 607 + 958 = 591 - 372 + 209 = 722 - 283 + 78 = 535 + 265 + 275 = 597 + 303 + 778 = 409 + 876 + 291 = 669 - 177 - 223 = 953 - 383 - 253 = 338 + 206 + 94 = 968 - 117 - 583 = 701 - 698 - 1 = 785 + 115 + 144 = 558 - 56 + 42 = 98 + 52 + 202 = 40 + 361 + 50 = 890 - 127 + 10 = 525 - 501 + 75 = 11 + 834 + 689 = 652 - 54 - 592 = 649 + 305 - 579 = 89 + 558 + 611 = 823 - 42 - 758 = 75 + 305 + 825 = 105 + 881 + 595 = 772 + 686 - 572 = 809 - 290 - 309 = 237 + 212 + 588 = 105 + 295 + 220 = 804 - 647 - 104 = 376 - 66 + 124 = 389 + 472 + 411 = 944 - 385 - 15 = 79 + 660 + 140 = 729 + 75 + 71 = 514 - 46 + 86 = 574 - 411 - 89 = 325 + 826 - 225 = 873 + 380 + 420 = 168 + 82 + 18 = 692 + 108 + 286 =月日姓名:练习范围:加法交换律和结合分秒成绩:律题数:100120 + 780 + 979 = 534 + 502 + 266 = 603 - 401 - 103 = 592 + 308 + 44 = 456 + 6 + 894 = 819 - 157 - 243 = 129 + 571 + 126 = 587 + 115 - 187 = 362 - 63 + 138 = 992 + 231 + 69 = 516 - 234 - 16 = 21 + 249 - 1 = 101 + 521 + 379 = 149 + 414 + 551 = 585 - 319 + 115 = 883 - 716 - 84 = 204 + 674 + 226 = 696 + 954 + 204 = 623 - 328 - 172 = 287 + 304 + 513 = 333 + 521 - 253 = 858 + 349 - 838 = 389 + 616 + 284 = 365 - 29 - 305 = 651 - 8 + 149 = 874 - 16 - 34 = 920 + 120 - 880 = 661 - 2 + 239 = 391 + 109 + 20 = 565 - 291 - 165 = 990 + 223 + 377 = 709 + 207 + 593 = 547 + 153 + 851 = 697 + 5 + 5 = 234 - 208 + 566 = 210 + 771 + 29 = 608 - 274 - 126 = 107 - 36 - 54 = 593 - 56 - 44 = 942 - 345 - 342 = 278 + 122 + 649 = 337 - 196 - 104 = 493 - 366 + 407 = 96 + 704 + 111 = 910 + 814 - 820 =458 + 235 + 165 = 627 - 16 - 567 = 961 - 169 - 61 = 264 - 158 + 336 = 152 + 526 + 148 = 682 + 45 + 855 = 575 + 9 + 11 = 526 + 252 + 248 = 254 - 164 + 546 = 644 + 899 - 554 = 347 + 553 + 555 = 456 + 244 + 935 = 282 + 223 + 418 = 243 - 164 + 657 = 248 + 630 + 652 = 936 + 386 - 846 = 398 + 648 - 98 = 289 + 89 + 611 = 115 + 172 + 185 = 981 - 76 - 381 = 133 + 667 + 226 = 802 - 408 - 292 = 936 - 93 - 707 = 54 - 43 + 846 = 963 + 37 + 53 = 918 - 428 - 272 = 385 + 54 + 546 = 795 - 770 + 5 = 701 - 472 - 1 = 145 + 716 + 655 = 712 + 2 - 652 = 776 - 205 - 195 = 841 - 285 - 115 = 808 - 401 - 108 = 215 + 271 - 115 = 936 - 303 - 136 = 945 - 89 - 445 = 94 + 159 + 241 = 171 - 116 + 629 = 79 + 821 + 483 = 866 - 311 - 189 = 857 + 549 - 767 = 286 + 214 + 505 = 126 + 455 + 474 = 189 - 59 + 611 = 335 - 15 + 65 = 563 + 137 + 838 = 405 + 262 + 238 = 213 + 287 + 257 = 526 + 802 + 74 = 43 + 186 + 757 = 145 + 758 - 75 = 667 + 33 + 309 = 805 - 590 - 110 = 326 + 474 + 301 =月日姓名:练习范围:加法交换律和结合分秒成绩:律题数:1001000 - 279 - 521 = 677 + 223 + 28 = 883 - 68 - 22 = 164 + 374 + 336 = 113 - 51 + 87 = 572 + 351 - 552 = 537 - 257 + 363 = 154 - 147 + 546 = 130 - 5 - 120 =20 + 66 + 734 = 611 - 571 + 289 = 562 - 102 + 338 = 200 + 195 - 180 = 783 - 174 - 226 = 708 - 113 + 192 = 232 + 173 - 222 = 505 - 449 - 51 = 71 + 506 + 194 = 657 - 47 - 43 = 443 + 357 + 729 = 693 - 9 + 207 =4 + 685 + 16 = 829 - 119 + 71 = 522 - 171 - 129 = 922 - 168 - 332 = 184 - 46 - 44 = 312 + 188 + 500 = 561 - 57 - 471 = 697 - 592 + 103 = 914 - 306 - 294 = 727 - 68 - 32 = 597 - 106 + 103 = 106 + 652 - 56 = 558 + 441 + 242 = 678 - 75 + 222 = 421 + 963 - 21 = 921 - 3 - 67 = 437 - 165 + 163 = 633 - 354 - 46 = 851 + 103 + 397 = 517 + 11 + 39 = 348 + 22 + 478 = 635 + 840 - 235 = 690 - 79 - 521 = 319 + 566 + 81 =893 + 25 + 25 = 243 + 319 + 81 = 490 + 110 + 830 = 878 + 42 + 458 = 6 + 54 + 575 = 95 + 683 + 217 = 3 + 297 + 99 = 828 + 299 - 748 = 650 - 228 - 50 = 375 - 64 - 36 = 158 + 542 + 795 = 657 + 170 + 530 = 136 - 112 + 64 = 497 + 419 - 197 = 578 - 319 + 22 = 798 - 778 + 2 = 145 + 355 + 283 = 835 - 179 - 521 = 145 + 10 + 655 = 299 - 197 + 501 = 424 - 73 - 124 = 988 + 546 - 688 = 722 - 562 - 22 = 758 - 257 + 42 = 143 + 318 - 93 = 210 + 627 + 73 = 136 + 364 + 196 = 729 - 84 - 16 = 506 - 36 - 426 = 5 + 95 + 45 =130 + 26 + 470 = 608 + 780 + 20 = 716 - 139 - 561 = 161 - 159 + 239 = 706 + 194 + 314 = 992 + 155 + 745 = 67 + 533 + 768 = 684 + 644 + 56 = 284 + 216 + 200 = 139 + 661 + 681 = 395 - 73 - 127 = 671 - 388 + 29 = 900 - 271 - 429 = 544 - 38 - 494 = 122 + 678 + 83 = 791 + 50 + 10 = 489 - 295 + 311 = 8 + 392 + 47 = 346 + 773 - 266 = 888 + 748 - 808 = 624 - 352 - 224 = 478 - 340 + 22 = 840 - 175 - 125 = 710 - 399 - 110 = 798 - 336 + 2 =月日姓名:练习范围:加法交换律和结合分秒成绩:律题数:100362 + 646 - 332 = 997 + 685 + 215 = 918 + 468 - 818 = 108 - 55 + 192 = 774 + 579 + 221 = 354 + 8 + 392 = 272 + 515 + 285 = 959 - 395 - 259 = 400 + 947 + 400 = 62 + 147 + 238 = 207 + 493 + 238 = 823 - 172 - 528 = 234 + 15 + 15 = 950 + 728 + 72 = 114 + 186 + 479 = 866 - 125 - 466 = 377 - 281 - 77 = 949 + 729 - 549 = 718 - 28 - 172 = 181 + 319 + 519 = 730 - 133 - 467 = 397 + 303 + 17 = 507 + 393 + 146 = 69 + 431 + 682 = 599 + 301 + 384 = 974 - 143 - 557 = 760 - 118 - 382 = 117 + 275 + 225 = 230 + 95 + 205 = 218 - 73 - 18 = 139 + 37 + 763 = 57 + 97 + 243 = 171 - 4 - 76 =521 + 79 + 767 = 681 - 500 - 81 = 670 - 34 - 470 = 304 + 296 + 97 = 218 + 82 + 737 = 496 + 104 + 970 = 215 + 182 + 285 = 533 - 48 - 152 = 518 + 15 + 82 = 472 - 180 + 28 = 397 + 3 + 745 = 594 - 383 + 306 =787 - 185 - 387 = 644 - 225 - 375 = 919 + 588 + 312 = 879 + 496 - 479 = 320 + 147 + 253 = 738 + 62 + 761 = 663 - 627 + 37 = 576 - 84 + 224 = 917 - 890 - 10 = 57 + 33 + 962 = 299 + 101 + 543 = 304 + 148 + 52 = 150 + 344 + 56 = 216 + 436 + 484 = 719 - 223 - 177 = 89 + 811 + 809 = 60 + 0 + 510 = 637 - 377 + 163 = 53 + 145 + 17 = 695 - 301 - 299 = 341 + 182 - 141 = 760 + 229 + 271 = 411 - 55 - 45 = 140 - 51 - 49 = 551 - 10 - 461 = 248 + 270 + 652 = 44 + 643 + 46 = 168 + 250 + 132 = 846 - 91 - 509 = 628 - 163 - 228 = 376 + 63 - 306 = 35 + 365 + 536 = 567 - 236 - 64 = 491 + 177 + 9 = 472 + 38 - 462 = 229 - 220 + 271 = 505 - 86 + 295 = 413 - 61 + 187 = 168 + 259 + 232 = 27 + 113 + 473 = 679 - 285 - 179 = 400 + 349 - 390 = 168 - 44 - 56 = 892 - 296 - 192 = 554 + 420 + 246 = 177 + 323 + 781 = 655 - 165 - 455 = 672 + 128 + 578 = 865 - 426 + 35 = 418 + 757 + 82 = 439 + 474 + 461 = 379 - 75 - 299 = 782 - 216 - 184 = 917 - 317 - 583 = 819 + 381 + 219 =月日姓名:练习范围:加法交换律和结合分秒成绩:律题数:100511 - 482 + 289 = 5 + 695 + 559 = 566 + 739 + 134 = 252 + 248 + 472 = 330 + 250 + 570 = 827 - 357 - 427 = 312 + 88 + 960 = 185 + 841 - 95 = 544 + 861 + 39 = 620 - 356 - 144 = 835 - 586 - 214 = 78 + 442 + 2 =11 + 937 + 489 = 981 + 365 + 35 = 806 - 156 - 606 = 680 + 584 + 316 = 991 + 200 + 300 = 27 + 43 + 862 = 265 + 335 + 941 = 570 + 412 + 188 = 912 - 543 - 12 = 460 - 250 + 440 = 584 + 931 - 554 = 210 + 290 + 850 = 685 - 24 - 595 = 835 - 39 - 661 = 262 + 235 + 438 = 474 + 268 + 132 = 894 - 809 + 6 = 893 - 586 - 214 = 940 + 352 - 910 = 53 + 17 + 566 = 692 - 113 - 187 = 749 - 472 - 28 = 863 + 332 + 68 = 358 + 542 + 356 = 659 + 399 + 1 = 929 + 153 + 347 = 12 + 856 + 18 = 366 + 919 + 534 = 741 + 159 + 664 = 449 + 921 - 429 = 960 + 297 + 503 = 211 + 240 - 171 = 100 + 40 + 50 =179 + 597 + 321 = 763 - 308 - 292 = 718 + 10 - 418 = 927 - 224 - 527 = 872 - 278 - 372 = 329 + 684 - 229 = 251 + 459 - 51 = 207 + 710 + 190 = 372 + 228 + 576 = 213 + 340 + 560 = 488 + 353 + 547 = 598 - 26 - 474 = 307 + 493 + 841 = 946 - 442 - 246 = 148 + 665 + 752 = 100 + 400 + 293 = 983 - 349 - 551 = 426 - 251 - 126 = 770 + 786 - 670 = 749 + 4 + 296 = 802 - 582 - 118 = 421 - 179 - 221 = 281 + 219 + 319 = 34 + 324 + 16 = 586 + 250 - 506 = 147 - 17 - 23 = 686 - 265 + 214 = 491 + 209 + 252 = 561 + 289 + 411 = 591 + 171 - 541 = 940 - 65 - 35 = 258 + 442 + 304 = 735 - 215 - 185 = 437 - 321 + 463 = 289 - 168 + 311 = 715 - 596 - 104 = 412 + 288 + 156 = 851 - 9 - 11 = 233 + 101 - 183 = 104 + 796 + 771 = 537 + 296 + 163 = 562 - 66 - 4 =507 + 93 + 692 = 99 + 201 + 260 = 217 + 34 + 266 = 560 - 5 - 75 = 932 - 446 - 154 = 110 - 34 + 390 = 714 + 775 - 684 = 925 - 88 - 835 = 655 + 194 + 45 = 798 + 458 + 442 = 949 - 363 - 149 = 443 - 51 - 149 = 515 + 444 + 285 =月日姓名:练习范围:加法交换律和结合分秒成绩:律题数:10050 + 89 + 211 = 401 + 408 + 499 = 791 - 40 - 191 = 554 + 27 + 43 = 60 + 40 + 33 = 525 - 25 - 475 = 787 - 196 - 587 = 664 + 136 + 487 = 649 + 605 - 569 = 188 + 284 + 412 = 234 + 531 + 369 = 551 - 482 + 249 = 740 - 626 - 40 = 501 + 857 - 421 = 542 - 501 + 158 = 938 + 378 - 438 = 128 + 939 + 172 = 406 + 989 + 194 = 393 + 53 + 307 = 845 + 358 - 795 = 453 + 111 + 689 = 459 - 269 + 341 = 347 + 153 + 71 = 731 - 663 + 69 = 922 - 696 - 4 = 567 + 271 + 629 = 985 - 762 - 185 = 216 + 773 + 284 = 671 - 588 + 229 = 558 - 125 - 58 = 766 - 199 - 366 = 611 + 698 + 2 = 903 + 287 - 3 = 664 + 951 - 164 = 634 + 494 + 266 = 397 + 854 - 297 = 319 + 481 + 563 = 719 - 647 - 19 = 118 + 323 + 182 = 629 + 853 - 429 = 682 + 546 - 82 = 500 - 29 + 200 = 442 + 58 + 373 = 587 - 3 - 527 = 552 + 679 - 52 =286 + 563 + 114 = 75 + 932 + 825 = 832 - 106 - 432 = 911 - 321 - 311 = 785 + 549 + 251 = 412 + 655 - 342 = 461 + 439 + 804 = 143 - 91 + 457 = 477 - 476 + 323 = 429 - 15 - 359 = 4 + 696 + 183 = 4 + 740 + 296 = 10 + 890 + 435 = 340 + 53 + 347 = 737 - 7 - 337 = 592 + 387 + 308 = 827 - 10 - 427 = 431 + 702 - 411 = 388 + 402 - 338 = 626 - 129 - 371 = 987 - 18 - 82 = 425 + 475 + 311 = 390 + 210 + 141 = 319 + 168 - 229 = 18 + 225 + 382 = 703 - 58 - 203 = 172 + 51 + 528 = 559 + 241 + 276 = 111 + 389 + 378 = 994 - 747 - 53 = 479 + 405 - 379 = 199 + 277 + 323 = 958 - 200 - 200 = 838 + 56 - 138 = 507 - 485 + 293 = 150 + 450 + 56 = 243 - 86 - 114 = 283 - 130 + 117 = 36 + 528 + 864 = 526 - 32 - 38 = 68 + 232 + 923 = 179 - 177 + 721 = 627 - 114 + 73 = 983 + 286 - 883 = 726 + 269 + 531 = 834 + 12 + 68 = 499 + 201 + 183 = 606 - 293 - 307 = 628 - 233 - 128 = 476 - 287 - 76 = 924 - 59 - 124 = 759 - 603 + 141 = 727 + 36 + 464 = 36 + 875 + 464 = 398 - 33 + 102 =月日姓名:练习范围:加法交换律和结合分秒成绩:律题数:100893 + 778 + 122 = 925 + 180 + 620 = 85 + 382 + 215 = 689 + 370 + 11 = 31 + 43 + 469 = 834 + 139 + 761 = 145 + 755 + 828 = 969 - 497 - 103 = 475 - 13 - 425 = 839 - 89 - 311 = 939 - 226 - 674 = 217 + 13 + 37 = 671 - 29 - 51 = 484 - 370 + 316 = 700 + 566 + 34 = 234 + 298 + 202 = 898 - 413 - 87 = 653 + 455 - 453 = 790 - 264 - 390 = 355 - 224 + 545 = 44 + 506 + 856 = 628 + 172 + 571 = 924 - 450 - 350 = 164 - 60 + 636 = 798 - 140 - 60 = 594 - 140 - 160 = 839 + 350 + 50 = 190 + 445 + 410 = 592 + 182 - 552 = 913 + 712 - 863 = 886 + 14 + 808 = 366 - 106 + 234 = 5 + 75 + 43 = 195 - 36 - 34 = 424 + 889 + 376 = 50 + 351 - 30 = 526 + 4 + 86 = 618 - 520 + 182 = 906 + 814 - 706 = 66 + 534 + 874 = 60 - 3 - 47 = 403 + 504 - 383 = 742 - 6 - 54 = 324 + 561 - 284 = 358 + 342 + 633 =905 + 875 - 205 = 308 - 19 - 108 = 508 + 414 + 292 = 306 + 167 + 394 = 428 + 15 + 785 = 495 + 614 - 445 = 467 + 181 + 619 = 785 - 420 - 185 = 325 + 197 + 103 = 275 + 665 - 265 = 593 - 481 + 307 = 837 - 529 - 71 = 265 + 873 + 27 = 291 - 39 + 509 = 715 - 84 + 85 =95 + 860 + 705 = 325 + 175 + 822 = 545 - 474 + 355 = 218 + 630 - 178 = 34 + 61 + 666 = 938 + 371 + 429 = 455 - 171 + 245 = 871 - 430 - 370 = 553 - 32 - 453 = 476 + 790 + 24 = 68 - 12 - 18 = 364 + 111 + 136 = 669 - 432 + 31 = 642 + 158 + 222 = 826 - 10 - 790 = 875 - 185 - 75 = 496 + 204 + 29 = 655 - 603 + 45 = 359 + 241 + 278 = 891 - 805 + 9 = 864 - 93 - 707 =3 + 77 + 140 = 512 + 238 + 162 = 934 - 31 - 169 = 12 + 278 + 588 = 713 - 13 - 693 = 235 + 818 + 165 = 416 - 97 + 384 = 806 - 56 - 44 = 768 - 296 + 32 = 184 + 267 + 433 = 561 + 32 - 501 = 113 + 164 + 387 = 686 + 972 - 636 = 335 + 326 - 235 = 730 + 787 + 113 = 398 + 202 + 904 = 319 - 179 - 21 = 596 + 433 + 367 = 4 + 596 + 173 =月日姓名:练习范围:加法交换律和结合分秒成绩:律题数:100438 - 128 + 262 = 509 + 291 + 334 = 186 + 250 + 350 = 52 + 940 + 28 = 652 - 38 - 592 = 812 + 547 + 353 = 983 - 681 - 83 = 136 + 364 + 223 = 30 + 304 + 196 = 535 - 285 + 365 = 756 - 522 - 56 = 700 - 27 + 200 = 4 + 165 + 335 = 975 - 71 - 775 = 476 - 93 + 24 = 835 - 516 - 135 = 991 - 11 - 191 = 150 - 80 + 750 = 749 - 216 - 84 = 652 + 290 + 610 = 427 - 145 + 173 = 560 - 297 - 103 = 842 - 78 - 142 = 473 - 399 + 127 = 679 - 23 - 379 = 671 - 210 - 190 = 115 - 10 + 385 = 715 - 7 - 705 = 665 - 66 + 35 = 138 - 55 + 162 = 872 - 498 - 72 = 945 - 767 - 45 = 943 - 600 - 200 = 97 + 227 + 173 = 575 - 515 + 225 = 873 - 77 - 673 = 750 - 555 - 145 = 360 + 40 + 99 = 410 + 90 + 134 = 204 + 792 - 104 = 462 + 238 + 401 = 801 - 95 - 101 = 343 + 312 + 88 = 484 + 316 + 634 = 192 + 8 + 961 =885 - 238 - 462 = 3 + 729 + 797 = 523 - 186 + 177 = 138 + 981 + 162 = 578 - 62 - 138 = 745 + 651 + 249 = 934 - 31 - 834 = 146 + 819 + 81 = 789 - 205 - 89 = 97 + 19 + 71 = 214 + 925 - 204 = 489 - 40 - 160 = 559 - 106 - 194 = 17 + 283 + 860 = 367 - 128 + 433 = 942 - 167 - 642 = 10 + 146 + 80 = 382 - 194 + 118 = 78 + 13 + 12 = 741 - 378 - 122 = 127 + 118 + 382 = 129 + 674 + 471 = 19 + 766 + 781 = 723 + 234 - 323 = 558 - 300 - 158 = 164 + 698 - 124 = 727 - 465 + 73 = 189 + 211 + 875 = 67 + 633 + 364 = 668 + 423 + 177 = 632 + 421 + 168 = 82 + 861 - 52 = 981 - 23 - 911 = 417 + 657 + 383 = 576 - 78 - 276 = 33 + 667 + 537 = 756 - 501 - 56 = 152 + 378 - 62 = 190 + 240 - 160 = 461 + 543 - 451 = 870 - 199 - 301 = 855 + 662 + 238 = 895 + 15 - 855 = 178 - 165 + 222 = 337 + 997 + 263 = 25 + 463 + 237 = 81 + 768 + 32 = 981 + 452 - 281 = 65 - 15 + 5 = 942 - 25 - 42 = 213 + 587 + 96 = 505 - 17 - 483 = 130 - 60 + 70 = 884 - 49 - 484 = 805 + 782 - 605 =月日姓名:练习范围:加法交换律和结合分秒成绩:律题数:100943 + 192 + 8 = 470 + 930 - 440 = 165 + 777 + 335 = 703 - 73 - 623 = 507 + 981 + 393 = 364 + 156 + 436 = 527 - 177 - 323 = 749 + 974 - 549 = 767 + 775 - 727 = 268 + 190 + 432 = 651 - 514 + 49 = 829 - 74 - 726 = 881 - 38 - 281 = 362 - 181 - 162 = 569 - 329 + 31 = 243 - 156 + 457 = 997 - 439 - 161 = 100 + 200 + 871 = 574 - 360 + 226 = 626 + 55 - 616 = 606 + 294 + 337 = 922 - 191 - 222 = 689 - 72 + 111 = 165 - 29 - 31 = 384 + 917 + 516 = 667 + 3 + 397 = 768 + 731 - 738 = 930 + 63 + 437 = 94 + 291 - 34 = 227 + 442 + 358 = 715 - 274 - 215 = 530 + 550 - 130 = 276 + 145 - 206 = 1 + 19 + 472 = 77 + 579 + 723 = 485 - 104 - 196 = 113 - 20 + 587 = 748 + 647 + 153 = 728 - 287 - 128 = 16 + 383 + 484 = 471 + 510 + 90 = 595 + 212 - 525 = 289 - 4 - 199 = 205 - 50 + 95 = 243 + 157 + 102 =765 + 692 + 35 = 203 + 83 + 517 = 688 + 335 - 608 = 1 + 402 + 99 = 695 - 623 + 5 = 747 + 630 - 347 = 37 + 43 + 283 = 746 - 270 + 154 = 749 + 52 + 51 = 946 + 94 - 746 = 511 - 2 - 411 = 722 + 126 + 674 = 189 - 94 + 411 = 918 - 113 - 787 = 578 + 240 - 528 = 48 + 847 + 53 = 825 - 744 + 75 = 126 + 191 + 309 = 623 - 380 + 277 = 684 - 8 - 32 = 793 - 347 + 7 = 852 + 785 - 52 = 777 + 153 + 123 = 804 - 14 - 754 = 537 - 121 - 379 = 749 - 564 - 136 = 683 + 247 + 217 = 818 - 784 - 16 = 575 + 921 - 475 = 94 + 506 + 327 = 928 - 18 - 52 = 730 - 412 - 88 = 664 + 629 - 584 = 728 + 802 - 228 = 124 + 748 + 176 = 451 + 575 + 225 = 246 + 192 + 608 = 382 - 39 - 292 = 787 - 195 + 13 = 948 + 405 + 195 = 971 - 13 - 387 = 954 - 469 - 454 = 262 + 773 - 162 = 628 + 336 - 588 = 655 + 45 + 229 = 535 + 310 - 35 = 34 + 159 + 36 = 798 + 508 + 292 = 299 + 380 + 401 = 47 + 853 + 877 = 72 + 497 + 428 = 643 + 192 + 608 = 58 + 32 + 711 = 757 - 46 - 667 = 965 + 672 - 565 =月日姓名:练习范围:加法交换律和结合分秒成绩:律题数:100270 + 11 + 89 = 469 - 190 - 169 = 320 + 360 + 440 = 692 + 588 + 108 = 6 + 932 + 44 = 983 - 116 - 683 = 11 + 289 + 332 = 57 + 637 + 543 = 343 + 899 + 57 = 264 - 82 - 174 = 897 - 15 - 85 = 303 - 63 + 497 = 267 + 433 + 362 = 69 + 631 + 967 = 92 + 15 + 15 = 682 - 70 - 20 = 133 + 667 + 928 = 383 + 705 - 323 = 626 - 357 + 74 = 741 - 321 - 241 = 324 + 212 - 304 = 690 - 201 - 199 = 752 + 233 - 652 = 210 + 933 + 90 = 666 + 234 + 618 = 225 - 36 - 24 = 540 - 486 + 160 = 888 - 598 - 202 = 964 + 578 + 22 = 801 - 112 - 688 = 774 - 331 + 126 = 300 + 204 + 96 = 580 + 454 + 446 = 829 - 122 + 71 = 706 - 596 - 106 = 490 - 485 + 10 = 465 - 115 + 35 = 718 + 65 + 435 = 10 + 790 + 176 = 573 + 926 - 543 = 956 + 388 + 212 = 794 - 26 - 714 = 560 - 260 + 40 = 560 + 110 + 190 = 498 - 80 - 20 =670 - 23 - 580 = 918 - 75 - 118 = 522 + 178 + 386 = 827 + 926 - 427 = 931 + 903 - 901 = 694 + 116 + 206 = 909 - 315 - 509 = 351 - 51 - 261 = 718 - 176 - 424 = 48 + 913 + 2 = 997 + 146 - 977 = 681 + 307 + 293 = 257 + 543 + 343 = 819 - 17 - 779 = 883 - 133 - 483 = 140 - 32 - 48 = 600 - 56 + 0 = 768 + 877 - 268 = 904 - 11 - 19 = 956 - 677 - 223 = 330 - 18 - 72 = 798 - 247 - 498 = 781 + 469 + 331 = 851 - 284 - 316 = 972 - 430 - 470 = 10 + 538 + 690 = 145 - 13 + 155 = 777 + 123 + 309 = 342 + 424 + 476 = 713 - 445 - 13 = 927 + 299 + 1 = 999 - 9 - 929 = 968 - 814 - 68 = 72 + 444 - 22 = 606 + 326 + 474 = 660 + 468 + 40 = 269 - 95 + 231 = 248 + 148 + 152 = 799 + 101 + 528 = 536 + 764 - 516 = 31 + 369 + 900 = 726 - 472 + 74 = 566 - 59 - 466 = 254 - 35 + 246 = 160 + 228 + 472 = 188 - 16 - 24 = 516 + 184 + 217 = 704 - 640 - 60 = 735 - 474 - 26 = 753 + 601 + 299 = 582 + 158 + 542 = 907 - 233 - 467 = 205 + 590 + 395 = 942 + 356 - 342 = 719 + 142 + 358 =。

(完整版)四年级下册数学加法交换律和结合律专项练习试题

(完整版)四年级下册数学加法交换律和结合律专项练习试题

四年级下册数学加法交换律、结合律及减法的性质专项练习题一、填空1、两个加数(相加),交换两个加数的位置,和(不变),这叫做加法交换律。

用字母表示为( a+b=b+c )。

2、先把(前两个数)相加,或者先把(后两个数)相加,和(不变)。

这叫做加法结合律。

用字母表示为(a+z+x=a+(z+x) )。

3、一个数连续减去两个数,等于()减去这两个数()。

这叫做()用字母表示为()4、在连减算式里,可以任意交换(两个数)之间的位置。

a -b-c =a -( c )-b5、根据运算定律在方框里填上适当的数或字母。

63+a=a+63 369+d+142=369+(d+142)(28+47)+53=28+(47+53) 603+(97+a)=(603+97)+a85-(a+c)=85-a-c b-(65-a)= b+65-a 43-(c-25)=43-c+2588-m-56=88-(m+56) (87+n+m)-20=(87+m)+(n-20)二、下面的算式分别运用了什么运算定律?把它填写在括号里。

175+281=281+175(加法交换律)452+364+136=452+(364+136)(加法结合律)23+351+177=(23+177)+351 (加法结合律, 加法交换律)44+68+36+32=(44+36)+(68+32)(加法交换律, 加法结合律)三、怎样简便就怎样计算。

598+99 396—28—22 355+260+140+245 109+(291—176)=697 =396-(28+22) =( ==396-50 = ==346 = =43+189+57 591+482+118 986+1999 216+89+11 473+79—63645—180—245 1022-478-422 987-(287+135)478-256-144672-36+64 36+64-36+64 487-287-139-61500-257-34-1432000-368-132 1814-378-422 155+264+36+44 698-291-9568-(68+178)561-19+58 382+165+35-82 155+256+45-98236+189+64 759—126—259 569—256—44514+189—214369—256+156 512+(373—212)228+(72+189)169+19928+45+72 123+38+62 1+13+85+7+99 100-57-23 37+56+63+44275+46+251457-(185+457)68+24+32+76 425+64+75+36235+102608-(208-149)725-(350-275) 845-(401-155)902-98900-(500-109)602-(433-298) 729-(395+171)634-273+466-127504+273-304-1733+99+999+9999四、拓展1、用6、7、8、9编4道得数相同的两位数加两位数的算式。

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