四年级下册数学口算题卡
四年级下册口算题卡100道题21张
四年级下册口算题卡100道题21张四年级下册口算题卡共计100道题，分为21张。
现将这些题目和答案逐一列出，并给出相应的解题步骤。
第一张题卡：题目1：28 + 14 = ?解：28 + 14 = 42题目2：53 - 19 = ?解：53 - 19 = 34题目3：60 ÷ 5 = ?解：60 ÷ 5 = 12题目4：72 × 3 = ?解：72 × 3 = 216题目5：45 + 37 = ?解：45 + 37 = 82第二张题卡：题目6：6 × 9 = ?解：6 × 9 = 54题目7：75 - 38 = ? 解：75 - 38 = 37题目8：67 + 89 = ? 解：67 + 89 = 156题目9：80 ÷ 10 = ?解：80 ÷ 10 = 8题目10：96 - 54 = ? 解：96 - 54 = 42第三张题卡：题目11：35 × 4 = ?解：35 × 4 = 140题目12：72 ÷ 9 = ?解：72 ÷ 9 = 8题目13：68 + 92 = ? 解：68 + 92 = 160题目14：57 - 31 = ? 解：57 - 31 = 26题目15：89 ÷ 7 = ?解：89 ÷ 7 = 13第四张题卡：题目16：42 × 6 = ?解：42 × 6 = 252题目17：55 ÷ 11 = ?解：55 ÷ 11 = 5题目18：73 + 45 = ?解：73 + 45 = 118题目19：86 - 39 = ? 解：86 - 39 = 47题目20：68 × 4 = ?解：68 × 4 = 272第五张题卡：题目21：36 ÷ 6 = ?解：36 ÷ 6 = 6题目22：45 + 28 = ? 解：45 + 28 = 73题目23：92 - 17 = ? 解：92 - 17 = 75题目24：69 ÷ 3 = ?解：69 ÷ 3 = 23解：65 × 5 = 325第六张题卡：题目26：35 ÷ 5 = ?解：35 ÷ 5 = 7题目27：41 + 63 = ? 解：41 + 63 = 104题目28：87 - 52 = ? 解：87 - 52 = 35题目29：48 × 3 = ?解：48 × 3 = 144题目30：68 ÷ 4 = ?解：68 ÷ 4 = 17第七张题卡：解：65 + 89 = 154题目32：79 - 36 = ? 解：79 - 36 = 43题目33：32 × 4 = ?解：32 × 4 = 128题目34：76 ÷ 8 = ?解：76 ÷ 8 = 9题目35：58 + 47 = ? 解：58 + 47 = 105第八张题卡：题目36：63 - 19 = ? 解：63 - 19 = 44题目37：45 + 83 = ?解：45 + 83 = 128题目38：72 ÷ 6 = ?解：72 ÷ 6 = 12题目39：36 × 6 = ?解：36 × 6 = 216题目40：98 ÷ 7 = ?解：98 ÷ 7 = 14第九张题卡：题目41：72 + 33 = ? 解：72 + 33 = 105题目42：84 - 68 = ? 解：84 - 68 = 16题目43：49 × 4 = ?解：49 × 4 = 196题目44：75 ÷ 5 = ?解：75 ÷ 5 = 15题目45：56 + 29 = ? 解：56 + 29 = 85第十张题卡：题目46：92 - 37 = ? 解：92 - 37 = 55题目47：68 ÷ 8 = ?解：68 ÷ 8 = 8.5题目48：57 + 75 = ? 解：57 + 75 = 132题目49：25 × 6 = ?解：25 × 6 = 150题目50：96 ÷ 12 = ?第十一张题卡：题目51：84 ÷ 7 = ?解：84 ÷ 7 = 12题目52：23 + 46 = ? 解：23 + 46 = 69题目53：67 - 39 = ? 解：67 - 39 = 28题目54：58 × 3 = ?解：58 × 3 = 174题目55：95 ÷ 5 = ?解：95 ÷ 5 = 19第十二张题卡：题目56：73 + 29 = ?题目57：95 - 68 = ? 解：95 - 68 = 27题目58：56 × 7 = ?解：56 × 7 = 392题目59：63 ÷ 9 = ? 解：63 ÷ 9 = 7题目60：74 + 37 = ? 解：74 + 37 = 111第十三张题卡：题目61：56 - 33 = ? 解：56 - 33 = 23题目62：79 × 4 = ?解：79 × 4 = 316题目63：45 ÷ 9 = ?解：45 ÷ 9 = 5题目64：68 + 57 = ? 解：68 + 57 = 125题目65：83 - 48 = ? 解：83 - 48 = 35第十四张题卡：题目66：42 ÷ 7 = ?解：42 ÷ 7 = 6题目67：72 + 93 = ? 解：72 + 93 = 165题目68：48 - 29 = ? 解：48 - 29 = 19题目69：57 × 5 = ?解：57 × 5 = 285题目70：76 - 41 = ? 解：76 - 41 = 35第十五张题卡：题目71：68 ÷ 17 = ?解：68 ÷ 17 = 4题目72：45 + 76 = ? 解：45 + 76 = 121题目73：57 × 6 = ?解：57 × 6 = 342题目74：83 ÷ 7 = ?解：83 ÷ 7 = 11.9 题目75：49 - 28 = ? 解：49 - 28 = 21第十六张题卡：题目76：64 × 4 = ?解：64 × 4 = 256题目77：73 ÷ 9 = ?解：73 ÷ 9 = 8.1题目78：68 + 65 = ? 解：68 + 65 = 133题目79：93 - 37 = ? 解：93 - 37 = 56题目80：59 ÷ 7 = ?解：59 ÷ 7 = 8.4第十七张题卡：题目81：78 + 95 = ? 解：78 + 95 = 173题目82：45 - 26 = ? 解：45 - 26 = 19题目83：57 × 4 = ?解：57 × 4 = 228题目84：86 ÷ 6 = ?解：86 ÷ 6 = 14.3题目85：63 + 64 = ? 解：63 + 64 = 127第十八张题卡：题目86：94 - 39 = ? 解：94 - 39 = 55题目87：65 ÷ 8 = ?解：65 ÷ 8 = 8.1题目88：78 + 83 = ?解：78 + 83 = 161题目89：57 × 3 = ?解：57 × 3 = 171题目90：79 ÷ 7 = ?解：79 ÷ 7 = 11.3第十九张题卡：题目91：68 + 89 = ? 解：68 + 89 = 157题目92：73 - 38 = ? 解：73 - 38 = 35题目93：57 × 4 = ?解：57 × 4 = 228题目94：92 ÷ 4 = ?解：92 ÷ 4 = 23题目95：79 + 65 = ? 解：79 + 65 = 144第二十张题卡：题目96：74 - 39 = ? 解：74 - 39 = 35题目97：85 ÷ 17 = ?解：85 ÷ 17 = 5题目98：68 + 74 = ? 解：68 + 74 = 142题目99：67 × 4 = ?解：67 × 4 = 268题目100：98 ÷ 7 = ?解：98 ÷ 7 = 14根据以上题目，总共有100道题，相应地解题步骤也已列出。
四年级下册口算题卡100道题21张
四年级下册口算题卡100道题21张1. 75 + 32 = _______2. 41 + 59 = _______3. 92 - 36 = _______4. 67 + 15 = _______5. 84 - 53 = _______6. 24 + 76 = _______7. 45 - 19 = _______8. 38 + 28 = _______9. 68 - 22 = _______10. 53 + 41 = _______11. 47 - 24 = _______12. 89 + 37 = _______13. 55 - 24 = _______14. 76 + 25 = _______15. 32 - 12 = _______16. 60 + 27 = _______17. 40 - 19 = _______18. 67 + 34 = _______20. 51 + 47 = _______21. 74 - 21 = _______22. 68 + 27 = _______23. 45 - 17 = _______24. 53 + 38 = _______25. 80 - 62 = _______26. 23 + 46 = _______27. 82 - 34 = _______28. 36 + 35 = _______29. 77 - 21 = _______30. 52 + 49 = _______31. 48 - 33 = _______32. 66 + 17 = _______33. 76 - 42 = _______34. 56 + 24 = _______35. 83 - 64 = _______36. 39 + 45 = _______37. 60 - 24 = _______39. 45 - 39 = _______40. 50 + 62 = _______41. 73 - 29 = _______42. 87 + 28 = _______43. 36 - 11 = _______44. 59 + 45 = _______45. 49 - 28 = _______46. 61 + 37 = _______47. 84 - 46 = _______48. 42 + 57 = _______49. 75 - 38 = _______50. 57 + 63 = _______51. 81 - 35 = _______52. 59 + 18 = _______53. 94 - 56 = _______54. 68 + 32 = _______55. 76 - 45 = _______56. 37 + 72 = _______58. 48 + 30 = _______59. 85 - 27 = _______60. 59 + 31 = _______61. 93 - 57 = _______62. 62 + 27 = _______63. 44 - 18 = _______64. 57 + 44 = _______65. 82 - 62 = _______66. 40 + 54 = _______67. 73 - 34 = _______68. 38 + 25 = _______69. 61 - 27 = _______70. 52 + 47 = _______71. 84 - 45 = _______72. 99 + 35 = _______73. 25 - 14 = _______74. 56 + 65 = _______75. 90 - 78 = _______77. 70 - 29 = _______78. 47 + 38 = _______79. 66 - 47 = _______80. 53 + 61 = _______81. 76 - 34 = _______82. 58 + 27 = _______83. 68 - 23 = _______84. 39 + 46 = _______85. 71 - 60 = _______86. 30 + 47 = _______87. 83 - 35 = _______88. 37 + 52 = _______89. 64 - 28 = _______90. 57 + 39 = _______91. 82 - 48 = _______92. 69 + 28 = _______93. 45 - 19 = _______94. 51 + 47 = _______96. 32 + 56 = _______97. 84 - 29 = _______98. 49 + 43 = _______99. 73 - 39 = _______100. 56 + 62 = _______这是一份精心制作的四年级下学期的口算题卡，包含了总共21张卡片，共100道题目。
4年级数学口算题卡
4年级数学口算题卡一、整数加减法口算1. 题目23 + 15 =45 22 =34+19 =56 37 =123+45 =234 121 =300+200 =500 300 =2. 解析对于23+15，个位上3 + 5 = 8，十位上2+1 = 3，所以结果是38。
45 22，个位上5 2 = 3，十位上4 2 = 2，结果是23。
34+19，个位上4+9 = 13，向十位进1，十位上3 + 1+1（进位）= 5，结果是53。
56 37，个位上6 7不够减，从十位借1当10，16 7 = 9，十位上5 1 3 = 1，结果是19。
123+45，个位上3+5 = 8，十位上2+4 = 6，百位上1+0 = 1，结果是168。
234 121，个位上4 1 = 3，十位上3 2 = 1，百位上2 1 = 1，结果是113。
300+200，3个百加2个百等于5个百，结果是500。
500 300，5个百减去3个百等于2个百，结果是200。
二、整数乘除法口算1. 题目2×30 =40×5 =3×12 =60÷2 =200÷5 =36÷3 =4×25 =120÷30 =2. 解析2×30，先算2×3 = 6，再在积的末尾添1个0，结果是60。
40×5，先算4×5 = 20，再在积的末尾添1个0，结果是200。
3×12，3×10 = 30，3×2 = 6，30+6 = 36。
60÷2，6个十除以2等于3个十，结果是30。
200÷5，20个十除以5等于4个十，结果是40。
36÷3，先算30÷3 = 10，再算6÷3 = 2，10+2 = 12。
4×25，4×20 = 80，4×5 = 20，80 + 20 = 100。
四年级下册口算练习册精选(3000题)
小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________小学数学计算练习 2024-11-02姓名：___________ 座号：__________ 情况：___________。
口算题卡四年级下册
口算题卡四年级下册一、加法口算题。
1. 3.25 +2.1- 解析：计算小数加法时，先把小数点对齐，然后按照整数加法的方法进行计算。
3.25+2.1 = 5.35。
2. 125+375- 解析：这是整数加法，个位5 + 5=10，向十位进1，十位2+7 + 1=10，向百位进1，百位1+3+1 = 5，结果是500。
3. 4.5+5.5- 解析：小数相加，4.5+5.5 = 10。
二、减法口算题。
4. 8.5 - 3.2- 解析：小数点对齐，8.5 - 3.2=5.3。
5. 560 - 230- 解析：个位0 - 0 = 0，十位6-3 = 3，百位5 - 2=3，结果是330。
6. 10 - 4.5- 解析：把10看成10.0，10.0 - 4.5 = 5.5。
三、乘法口算题。
7. 2.5×4- 解析：根据乘法口诀，25×4 = 100，那么2.5×4 = 10。
8. 12×11- 解析：可以用简便方法，12×11 = 12×(10 + 1)=12×10+12×1 = 120 + 12=132。
9. 3.6×2- 解析：先算36×2 = 72，再看因数中一共有一位小数，从积的右边起数出一位点上小数点，结果是7.2。
四、除法口算题。
10. 12.6÷3- 解析：可以把12.6看成126，126÷3 = 42，再把商缩小到原来的(1)/(10)，结果是4.2。
11. 240÷60- 解析：根据商不变的性质，被除数和除数同时缩小10倍，变成24÷6 = 4。
12. 8.1÷9- 解析：81÷9 = 9，8.1÷9 = 0.9。
五、混合运算口算题。
13. 2.5+3.5×2- 解析：先算乘法3.5×2 = 7，再算加法2.5+7 = 9.5。
人教版四年级下册每日每周口算题卡
23×40= 54÷3= 18×30= 60÷30=70×50= 250÷50= 14×60= 80÷40=18×50= 16×30= 1.25+2.3= 35.7-2.4=12.3+4.06= 0.75+0.4= 1.34+0.8= 9.5-2.7=1.8+8.18= 7.82-7.2= 8.7+0.03=2.7+3.9=9.3-8.8= 1.9+25.79= 4.5-3.26= 5.1-1.9= 2.2+5.7= 4.8-2.5= 18.3-3.7= 2.9+15.9= 6.3+3.6= 6.7-4.5=6.8-0.7= 27.3+2.15= 23.5+1.68= 53.16+3.54= 6.6-3.7=7.2-2.7=12.3+3.7= 5.3+4.47= 2.8+1.9= 3.2+12.76= 3.25-0.12= 4.5-2.1= 5.8+6.9= 1.5+4.85= 16.8+5.4= 3.6-1.3= 24.6+2.4= 8.1+1.2= 2.45+5.5= 0.5+2.6=93.1-20.9= 53.4-2.4= 5-0.08= 96.3-56.2=136.5-105= 73.4+52.1= 79.2+56.8= 7.21+6.9=1.64+2.35= 6.72-3.28= 35.7-2.4=4.5-3.26=5.1-1.9= 2.2+5.7= 640÷80= 15×5= 23×3=12×2×5= 480÷80= 16×5= 27×3= 90÷15= 48÷4= 640÷16=39÷3= 24×20= 32×3= 48÷16= 12×8=27×3= 56÷14= 24÷8= 14×2= 83－45= 560÷80= 96÷24= 40÷20= 40×30= 37＋26= 76－39= 605＋59= 30×23= 12×8= 27＋32= 48＋27= 4500×20= 73＋15= 120×600= 200×360= 6800×400= 280+270=4×2500= 6000÷40= 5×1280= 310－70=第三周400×14= 470+180= 1000÷25= 160×600= 20×420=290×300= 8100÷300=7600÷200= 930-660= 7600÷400= 680+270= 980÷14= 4200÷30= 6×1300= 1300×50=200×48= 530+280= 9200÷400= 840÷21=180×500= 8000÷500= 1900÷20= 200×160=8700÷300=300×330= 3×1400= 7000÷14= 600÷12= 9600÷80= 140×300= 8800÷40= 9600÷800= 750－290= 5×490=第四周760×20= 7500÷500= 370×200= 650÷13=8600－4200=240×4= 640÷80= 15×10= 160×30= 250×6=7200+900= 410-201= 125×8= 48×20= 6600÷600=390+140= 11×80= 24×50= 3600÷400= 4000÷50=第五周4.8-2.5= 18.3-3.7= 2.9+15.9=6.3+3.6= 6.7-4.5=6.8-0.7=0.2-0.09= 2+9.1= 0.89-0.25= 1-0.55=20.22+0.78= 2-0.75= 5.78-0.24= 0.42+10.68=8.34-6.22=第七周6.37+4.55=320X5= 120X8= 9X470= 310X5=6X150= 390X5= 2X570= 6X270= 270X2= 940X3 =700X8= 4X280= 6X660= 2X880=6X230= 8X800= 7X210= 860X6= 6X930= 480X9 =6X280= 240X3= 7X130= 2X450=9X390= 9X780= 270X5= 5X690= 790X6= 720X9 =8X920= 4X980= 340X7= 4X710=8X730= 900X2= 170第八周X9= 9X970= 4X590= 3X860=290X4= 7X630= 960X7= 860X9=8X680= 340X2= 5X490= 5X500= 6X47 0= 560X3=5X300= 5X180= 8X300= 820X8=9X150= 140X7= 3X420= 480X6= 530X 4= 390X2=810X8= 8X180= 2X950= 670X9=360X9= 400X9= 2X760= 9X350= 430X 8= 670X6=850X4= 320X3= 3X550= 4X330=980X9= 560X6= 940第九周X8= 920X7= 7X510= 200X2=8X490= 7X250= 7X320= 770X2=2X330= 4X520= 410X9= 730X4= 680X 3= 2X180=550X6= 6X970= 2X840= 770X5=970X5= 5X370= 620X8= 990X6= 4X78 0= 940X6=第十周27.3+2.15= 23.5+1.68= 53.16+3.54= 6.6-3.7=7.2-2.7= 12.3+3.7= 5.3+4.47= 2.8+1.9=3.2+12.76= 3.25-0.12= 530－70= 420－90=9600÷30= 7×700= 203+98= 1800÷300= 240+570= 4800÷400= 370+580= 580-490= 910－370= 250×8= 270－190= 360×2= 75÷25= 330÷11= 6×800= 5400÷9= 420÷60= 9×800= 3×330= 300×7=9×500= 390÷13= 6300÷700= 370＋560=第十一周5600÷700= 4800÷12= 3500÷7= 520+490＝450－90＝80＋330＝70×700＝7000÷70＝4000÷80＝2400÷200＝420－90＝170＋320＝1000－51＝520－260＝910－190＝35×200＝22×200＝8800÷400＝9300÷300＝6×300＝1800÷200＝9300÷30＝280÷40＝304＋199＝390÷26＝1250÷50＝21×40＝6600÷220＝760－198＝660－220＝5000÷50＝100×91＝753－299＝7000÷70＝200÷40＝180÷30= 240÷40= 35×2= 140×7=13×6=第十二周280×3= 350×2= 50×11= 250×6=7200+900= 410-201= 125×8= 48×20=6600÷600= 390+140= 11×80= 24×50= 3600÷400= 4000÷50=530－70= 420－90= 9600÷30= 7×700=203+98= 1800÷300= 240+570= 4800÷400=370+580= 580－490=910－370= 25×8= 270－190= 36×2= 75÷25= 330÷11= 6×800= 5400÷9= 420÷60= 9×800= 3×330= 300×7= 9×500= 390÷13= 6300÷700= 5600÷700=第十三周4800÷12= 3500÷7= 370＋560= 520＋490= 450－90＝80＋330＝70×700＝7000÷70＝4000÷80＝2400÷200= 420－90＝170＋320＝520－260= 910－190=35×200＝22×200＝8800÷400= 9300÷300= 6×300＝1800÷200＝9300÷30＝280÷40＝304＋199＝390÷26＝1250÷50＝21×40＝6600÷220= 760－198= 660－220＝5000÷50＝100×91＝ 753－299＝17×40＝100－63＝75÷15＝ 4.4+15.99= 88-69.21=63.1-11= 0.48+0.52= 1-0.98= 3.7+4.8= 8.36+0.64=3.6+0.87= 8.16+3.7= 0.33+9.8=810÷90=630÷70= 100÷20=720÷90= 240÷8 0=60÷10= 150÷30=450÷90=360÷90= 21 0÷70=320÷40=450÷90=第十四周160÷40=360÷60= 180÷90=150÷50=320÷80=400÷50=360÷60=40÷20= 720÷80=480÷80=350÷70=70÷10= 100÷50=640÷80=80÷40=100÷50=200÷40=300÷60=140÷70=540÷90=160÷40=240÷40=180÷60=630÷70= 540÷60= 360÷30=400÷50=180÷90=180÷30=480÷60=400÷50=80÷40=570÷30=720÷60=900÷30=160÷80= 420÷70=960÷60=420÷60=900÷50=420÷10=620÷20=240÷80=400÷40= 6 30÷30= 950÷10=740÷10=840÷30= 680÷40=822÷6=380÷20=620÷10=300÷50=140÷70=300÷10=940÷10= 360÷40=840÷30=680÷40=第十五周2÷6=29) 380÷20=30) 300÷50=31) 850÷10=32) 960÷6=33) 990÷90 = 34) 210÷10=35) 240÷60=36) 530÷10=37) 300÷50=38) 850÷10 = 39) 960÷6=40) 990÷90=41) 210÷10=42) 300÷50=43) 960÷80 = 44) 180÷90=45) 300÷50=46) 960÷80=47) 180÷90=48) 980÷70 = 49) 240÷80=50) 280÷40=51) 980÷70= 52) 400÷80=53) 970÷10 = 54) 270÷30=55) 1000÷50=56) 400÷80=57) 970÷10=58) 270÷30 = 59) 1000÷50=60) 670÷10=61) 180÷30=62) 220÷20=63) 490÷70 = 64) 350÷10=65) 990÷10=66) 860÷20=67) 960÷30=68) 880÷40 = 69) 480÷20=70) 670÷10=71) 180÷30=72) 220÷20=73) 490÷70 = 74) 350÷10=75) 990÷10=76) 860÷20=77) 680÷20=78) 300÷60 = 79) 900÷10=80) 900÷20=81) 770÷10=82) 690÷30=83) 990÷6 = 84) 950÷50=85) 60÷30=86) 260÷10=87) 540÷60=88) 580÷10 = 89) 260÷20=90) 680÷20=91) 300÷60=92) 900÷10=93) 900÷20 = 94) 770÷10=95) 690÷30=96) 990÷6=97) 950÷50=98) 360÷60 = 99) 470÷10=100) 1000÷10=54090= 47) 40/20= 48) 60/20= 49) 9 0/10= 50) 140/20=51) 270/90= 52) 630/70= 53) 270/90= 54) 250/50= 55) 490/70=56) 420/70= 57) 40/10= 58) 90/10= 59) 100/20= 60) 20/10=61) 200/50= 62) 630/70= 63) 420/60= 64) 270/30= 65) 720/90=66) 30/10= 67) 320/40= 68) 630/90= 69) 60/10= 70) 270/30=71) 350/50= 72) 360/90= 73) 140/20= 74) 450/90= 75) 140/70=76) 160/20= 77) 420/60= 78) 300/60= 79) 80/20= 80) 160/80=81) 40/20= 82) 560/80= 83) 450/90= 84) 320/40= 85) 450/90=86) 80/20= 87) 40/10= 88) 200/40= 89) 270/30= 90) 630/70=91) 140/20= 92) 540/60= 93) 300/ 50= 94) 360/40= 95)第十七周540/60=96) 720/90= 97) 150/30= 98) 210/70= 99) 360/40= 100) 420/60=12.3+4.06=0.75+0.4=1.34+0.8= 9.5-2.7= 1.8+8.18=7.82-7.2=8.7+0.03= 2.7+3.9= 9.3-8.8= 1.9+25.79= 7.85+3.4= 3.07+3.65= 1.83+2.7= 13.8+9.9= 4.29+2.1= 8.3-2.63= 1.7+0.43= 5-0.44= 12.6+3.42=19.8-5.6=14-0.14=4.64+15.36=0.99+1.8=2.56-0.37=3.9+2.03=2.14-0.9=7.55-4.1=0.87+5.68=13.3-5.28=7.87+5.66=62.3-1.25=5.7-0.93=10.5-3.25=6.4+1.89=4.1+28.9=25.13-1.8=5.87+35.26=3.08+5.83=5.62-4.2=16.52-1.08=35.85+8.04=30.07+39.65=11.83+62.7=3.8+9.9=54.29+27.1=98.3-2.3=10.7+0.93=5.64-0.44=1.6+68.42=85.8-56.6=20.2-7.09=24+9.18=10.89-10.25=1.1-0.55=2.22+0.8=2.2-0.75=54.78-10.24=50.42+20.98=2.34-1.2=66.37+8.5=8.02+15.28=108.5-35.05=0.32+1.57=9.25+2.25=9.23+4.52=24.8+1.46=5.58+1.89=0.78+2.2=0.8-0.45=6.45-3.29=92.7-0.05=87.68-20.7=75.8-17.5=42.5-23.65=56.2+9.38=67.3+23.92=4.72+8.49=5.63+1.27=9.06-1.59=7.95-4.9=8.02+5.08=18.5-5.07=4.32+18.7=5.65+8.95=7.3+49.52=54.8+9.4=6.8+89.8=0.78+2.2=0.6-0.59= 66.5-3.2=55.63-5.6=11.3+80=15.6-4.4=8.4+35.76=8.8-2.69=62.9-2.17=6.08+12.3=3.9+1.32=15.78+23.9=4.5-1.5=3.7+7.25=64.79-8.67= 5.3+19.45= 4.86-0.42=3.06+8.45=4.64+2.36= 7.8+45.22= 1.8+5.75= 0.63+4.5= 29.9+5.6= 4.78+3.94= 98.8+0.08= 47.3+5.04= 33.1-7.65=6.07-5.63= 56.3-28.7=1.62-1.58=2.15+10.86= 81.1-14.9= 4.2+3.76=12.7-0.55= 7.68-2.74= 5.58-1.75= 12.45-0.65= 6.32+8.3= 27.3+73.2=4.22+8.46=5.63+1.25=9.36-1.59=7.65-4.19=3.9+7.5=16.9-1.79=5.63+9.5=4.6-0.52=3.56+5.75=2.64+2.36=76.8+5.2=1.5+5.5=0.68+4.85=39.7+5.06=2.42+0.59=57.5+1.36=6.09+8.04=4.98+1.89=6.4+53.6=32.01+5.05=24.4-15.5=3.6+20.02=41.2-2.66=4.4+7.68=92.7-0.05=87.68-20.7=75.8-17.5=42.5-23.65=56.2+9.38=67.3+23.92=4.72+8.49=5.63+1.27=9.06-1.59=7.95-4.9=2.42+0.59=57.5+1.36=6.09+8.04=4.98+1.89=6.4+53.6=32.01+5.05=24.4-15.5=3.6+20.02=41.2-2.66=4.4+7.68=55.63-5.6=11.3+80=15.6-4.4=8.4+35.76=8.8-2.69=62.9-2.17=6.08+12.3=3.9+1.32=15.78+23.9=4.5-1.5=4.78+3.94=98.8+0.08=47.3+5.04=33.1-7.65=6.07-5.63=56.3-28.7=1.62-1.58=2.15+10.86=81.1-14.9=4.2+3.76=2.32+0.59=6.5+18.9=6.9+8.4=4.9+1.87=6.5+13.56=33.51+5.5=48.43-15.65=3.36+0.92=41.92-2.6=4.5+17.58=5.63-5.21=1.3+8.56=14.6-0.34=8.24+3.76=8.88-2.69=42.5-22.17=6.2+12.63=3.8+1.37=15.28+28.99=4.65-1.15=4.08+3.96=28.8+3.58=45.03+5.4=34.71-5.65= 68.07-5.63= 6.3-2.07= 51.62-16.58= 22.15+16.96= 51.16-14.6= 4.6+3.76= 3.94+35.6= 41.43+22.68= 7.08+28.95= 28.3+1.95= 19.29-9.3= 6.8-5.05= 25.63-7.52= 25.9+31.1= 99.1+1.9= 35.5+25.4= 32.5+6.84= 35.43-15.3= 101.7-81.65= 17.26+56.17= 53.69+39.05= 8.99+58.06= 26.5-15.7= 27.37+6.58= 50.43-34.4= 13.29+25.58= 11.3+31.25= 9.37-6.8= 44.9-31.9= 20.1-19.9= 71.4+22.57= 7.06+2.87= 0.8+82.2= 2.55+9.45= 51.9-21.8= 29.4-8.83= 5.12+7.84= 7.56+4.36= 81.9-56.45= 35-15.6= 18.26+3.8= 71.05+2.25= 40-27.35= 16.09+7.01= 3.46+5.05= 11.16-2.36= 145.8-15.3= 128.9-17.7= 35.5+41.9= 13.56+24.44= 33.8-25.6= 158.3-38.2= 4.97+7.29= 18.9+27.1= 0.9+121.1= 96.7+16.3= 23.5-4.05= 5.4+73.65= 1.8+3.09= 75.9-38.7= 51.2-11.2= 22.13+4.07= 76-47.88= 39.1+2.09= 48.6-47.9= 1.6+20.47= 211.9-11.8= 31.7+57.7= 9.81-0.09= 28.23-2.02= 198.3-25.1= 132.8-59.8= 91.9-21.1= 9.28+1.69= 59.9+41.1= 97.8+14.55= 29.8-3.5= 57.62+5.5= 0.95+9.65= 36.9+6.1= 30.5-15.6= 9.05-3.4= 26.7+13.3= 41.9-5.8= 16.89-2.46= 85.6-45.1= 7.94+18.5= 4.28-1.93= 9.53+3.3= 36.1-31.4= 5.02+3.73= 44.6-15.15= 21.2+58.36= 9.07+48.1= 17.6-6.29= 13.47+85.4= 3.29+12.5= 62.3-33.75= 4.83+10.51= 13.98+16.3= 6.03-3.7= 9.84-2.77= 8.15+32.5= 35.82-5.67= 5.69+17.2= 4.25-2.11= 80.09-14.49= 11.89+7.74= 8.41-1.16= 4.05+44.83= 57.63-40.43= 25.54-17.32= 4.46+36.8= 25.64-5.01= 34.9+35.5= 74.32-8.75= 5.93+6.13=37.5-4.06= 10.73-2.19= 14.01+3.99= 8.63-7.73= 27.9+25.55= 11.43+8.34= 26.8-17.06= 67.1-49.05=13.74+9.53= 7.25+5.23= 3.84-3.48= 9.15-7.4= 4.42+16.34=四年级口算（八）四年级口算（七） 四年级口算（十）四年级口算（九）46.1+6.95= 17.01-3.72= 29.22+6.33=83.2-7.9= 47.2-19.6= 39.8+6.79= 9.11+15.9= 85.2-59.3= 3.17+5.6= 6.9-1.15= 8.75+6.7= 4.78+19.4= 43.2-35.5= 4.47+9.64= 69.2-30.4= 16.08+7.78= 12.25-7.62= 36.28+24.9= 51-35.6=6.11-2.2= 4.86+17.4= 65.16-30.01= 34.9+9.09=3.92-2.1= 16.3+28.1= 3.57+11.5= 34.1-12.05= 10.37+8.6= 39.5-7.2= 28.04-5.8= 2.37+6.94= 61-10.7=8.46+5.38=5.36+4.1=14.8+16.2=15.16-2.4=16.18+45.96= 0.51+2.86= 11.52+22.74=31.26-2.9=32.6+5.97= 50.36+15.63=2.6+16.44=21.55+20.6=5.66+1.44=1.69+5.88=51.26+5.8=27.3+4.4=53.6-16.83=22.54+6.66=13.2-1.66=24.5-1.9=51.62-2.8=23.4-12.48=4.56+12.56=46.25-5.6=23.56+12.45=22.11-3.87=63.25-7.78=24.26+15.83=18.37+15.7=1.83+9.26=13.02+5.99=31.24-16.5=10.33-7.7=16.5+43.25=60.03+19.57=16.59-1.66=43.33-5.6=28.16-6.9=38.19-2.6=13.8+37.85=17.51-3.6=55.16-22.37=2.37+1.68=73.28+1.44=30.73+9.5=13.6-12.69=41.52-23.51=23.6-1.77=30.26-16.45=29.4-1.66=43.16-8.8=26.5-13.66=55.1-44.9=36.45+3.55=6.69+1.8=55.33-6.9=20.88-19.5=12.34+23.45=32.14+5.6=47.11-28.22=25.36-23.79=5.3-2.89=2.09+43.6=16.25+8.67=13.44-2.48=49.2-13.61=13.16+8.48=11.04+6.98=1.3+9.77=7.8+13.22=16.88-7.91=31.55-8.6=3.68+16.33=15.6+15.06=15.32-6.83=38.38-46.46=12+8.2=25.7-6.2=3.48+6.6=2-1.07=2.31+8.49=23-0.3=11-1.1=17.3-0.6=8.8+32.2=7.6+3.12=2.3+26.52=16.4-3.5=9.9+2.01=1.9+9.3=四年级口算（十二）四年级口算（十一）3.6+23.9=4.09+2.6= 6.9+2.01= 31.9-1.8= 9.7+32.3= 51.2+0.12= 2.34+3.4= 0.11+4.2= 8.12-0.82= 31.8-0.9= 42.9+6.5=5.36+6.7= 4.4+6.57= 3.5+16.8= 2.5+7.05= 4.5-3.9= 3.07+4.98= 7.6-3.26= 4.9+24.1= 3.7-0.07= 9.7+3.03= 2.8+4.08= 5.4+8.7= 6.87+2.2= 5.3+23.7=9.5-0.05= 0.34+12.6= 8.9+0.21= 4.6+23.45= 1.09+9.6= 8.7+9.6= 34.7+3.3= 8.4-4.6= 25.8-4.5= 3.1+3.9= 7.5+41.5= 6.12-6.1= 64.7+0.5= 31-0.8= 22.8+4.9= 7.6+1.9= 3.9+8.1= 9.8+1.6= 11-0.67= 3.3+7.68= 6.5+6.05= 5.9+3.1= 6.1+3.8= 5.4-4.6= 2.13+2.7= 4.9+2.6= 15-1.6= 1.02+2.8= 5.3-3.5= 4.4+1.6= 6.06+3.4= 35.4+7.6= 7.7-0.8= 18-0.9= 3.3+3.06= 5.4+2.66= 5.86-0.8= 10-0.25= 5.5+5.75= 6.1+1.9= 0.7+30.5= 2.5-1.3= 15.4-0.6= 4.3+5.6= 1.8+5.57= 10.6-0.3= 6.3+4.56= 25.4-3.5= 19.8+3.3= 6-0.35= 7.3-0.7= 2.5+5.63= 13.4+6.5= 18-0.8= 2.4-2.02= 1.6+21.34= 3.3+4.5= 12.5-6.5= 7.1+42.9= 5.6+5.5= 3.2-3.01= 6.45+2.5= 2.9+1.2= 5.3+23.7= 10.2-0.5= 1.4+6.06= 47.9-10.9= 2.3+8.77= 11.2-2.4= 38-16.5= 9.9+12.1= 29.8+10.2= 17.8-2.9= 2.3+0.07= 6.04+3.96= 7.2-6.8= 10-3.5= 3.4-2.9= 13.6-8.6= 27.6-6.6= 8-0.4= 7.7-3.9= 5.8+3.2= 0.8-0.3= 6.25-3.2= 18-0.58= 13.8+1.9= 41.5-3.8= 3.56+6.4= 41.5+3.7= 4.7-2.65= 43.19+5.1= 52.7+7.53= 1.23+0.77= 4.3-3.4= 1.39+8.7= 1.81+3.3= 8.9+2.1= 四年级口算（十四） 四年级口算（十三） 四年级口算（十六） 四年级口算（十五）3.6-24.8= 1.72+6.7= 12-1.2=9.5+0.9= 5.9-2.2=25.3+6.6= 16-0.53= 37.5+4.61= 7.58+0.3= 12.5-2.7=10-7.6= 22.9-2.8= 1.18+20.9= 56.8-3.9=35-4.5=2.5+9.45= 6.35-1.5= 53.6-15.4= 8.08+2.02=4.19-2.1=2.27-0.5=3.12+5.19= 37.15+2.85= 5.41+42.6= 45.2-15.2=14.41+2.09= 26.1-19.4= 6.45+25.3= 14.29+5.11= 37.15-45.02= 12.5+5.64= 23.05-16.02= 5.93-3.6= 11.3+23.65= 9.17-5.06= 45.1-25.1= 9.58+4.3= 26.1+4.59= 4.6+18.67= 4.85+2.5= 3.3+9.8= 34.5-21.6= 8.66-2.46= 28.5-3.8= 25.6+14.4=75.6-26.4=3.07+20.5=20.3-17.1=24.3-12.24=28.25+3.15=31.26-12.5=4.66+12.4=16.72+0.6=30.1-10.05=23.9+7.88=25.4-6.2=7.51+3.8=8.46-5.41=42.1-6.1=6.55-4.24=5.09-3.4=24.1+12.34=3.94+6.2=8.38+34.12=12.6-2.5=2.95+7.3=6.19+9.24=36.56-21.4=6.03+7.57=6.92+15.5=10.7-5.8=13.9+3.01=25.8-5.6=15.3+22.41=14.65+2.1=1.23+5.64=48.5-6.4=15.9+4.5=6.49+42.8=3.69+4.5=1.89+4.3=21.56-2.4=56.4-26.3=18.31-5.01=11.6+35.45=7.55+16.3=54-23.6=13.8+3.2=35.12-4.1=36.56-12.5=21.5+11.65=16.8-6.5=29.4+0.06=19.28-8.25=23.7-11.9=31.6-5.8=27.3+0.85=31.1-19.6=13.55+0.65=4.37+25.8=2.21+27.3=33.7-23.5=12.86-5.6=23.89+1.01=25.92-15.8=28.08+12.2=33.5-12.7=1.28+26.5=3.61+36=20.1+0.21=25.67-5.6=13.2+5.9=13.25-3.2=9.95+0.65=3.64+38.5=5.04+12.7=42.6-24.6=6.98+22.4=41.8-30.7=7.43+34.8=15.85-12.21=10.95-7.65=2.14+20.3=5.07+35.23=36.1-18=23.2-16.5=26.3-25.2=36.85-12.5=20.09-19.9=39.69+20.11=四年级口算（十七）四年级口算（二十）四年级口算（十九）5.4-4.8= 20.3+19.2= 0.01+9.99= 20.18-5.05= 7.85-2.34=6.71+14.9= 29.4-7.8= 1.84+30.5= 36.87-3.6= 43.8-34.5= 7.44+0.66= 15.9-7.52= 9.45+13.6= 42.94-31.6= 6.45+8.7=15.9+6.1= 0.23+12.5= 6.28+22.9= 0.98-0.24= 36.8-4.2= 10.12-0.21= 16.14+23.86= 0.12-0.01= 11.48+0.02= 13.52+0.7= 22.95-10.6= 3.65+34.6=5.18-3.08=6.07+30.5= 12.32+5.6= 5.71+23.6= 4.57+0.03= 28.6-12.5= 18.6-5.5= 24.33+12.5=2.65+3.45= 25.89-12.8= 7.5-2.9= 66.6+33.4=18.2-0.18=19.13-16.11= 25.76-15.6= 18.16-0.61= 13.96-2.9= 51.1-2.1=4.15-3.45=56.23+12.89=18.08+22.9=11.07+13.93=30.5-6.57=23.05+45.1=20-12.25=60-32.5=3.45+12.95=66.25+33.75=24.8-11.6=10.07+3.93=8.9+4.35=40.9-20.09=43.17+2.9=25-4.54=14.6+4.56=5.76+3.42=4.49+4.11=6.5+5.8=23.1+45.09=11.2-4.8=13-4.23=12-4.55=8.99+2.11=19.02+6.9=6.45+3.95=31+8.1=2.45+35.5=1.98-0.89=11-4.5=6.3+4.07=60.75+3.25=13.5+11.25=30-5.55=12.48+3.45=12.45-0.65=3.69+6.31=5.9+4.13=4.24+3.56=15.8+11.9=43.02-15.9=6.25+13.75=2.75+7.35=10.45+3.55=3.5+45.9=20.17+20.71=4.67+3.33=21.7+9.3=20.5-4.6=2.12+3.88=9.8-3.28=20.78+4.66=20.4+5.6=13.8-4.2=5.12-4.22=7.45+1.89=7.24+12.6=23.88+10.2=11.8+40.2=2.07-1.98=10-7.98=2.34+19.78=31.44-5.64=98.1+10.2=11.2-4.9=34.2+2.9=12.8+13.23=6.08+3.94=12.65+0.35=2.03+12.5=6.35+3.75=3.67+45.03=4.6+3.04=3.89+2.11=8.97+3.03=6.84-4.44=6.12+5.78=5.64-4.34=60.2+5.34=40.5-4.05=54.3+44.53=54.12+3.89=3.56+6.12=4.37+6.33=6.45+4.3=四年级口算（二十二）四年级口算（二十一）6.34+6.66= 12-5.88= 6.4+34.5= 12.3+5.6= 5.28+16.14= 30.5+9.6= 2.36+7.59= 13.16+53.59= 43.16+3.77= 5.58-2.19= 43.21-12.34= 16.55+2.9= 7.77+13.33= 13.32+7.6= 10.8-4.9= 3.08-2.88= 3.4+2.89= 6.78+5.43= 4.32+60.7=8.9+1.1= 5.2+6.82= 50.12+4.78= 60-4.34= 8.98+4.23= 46.11-26.52= 27.31-18.27= 34.12-16.55 16.7-8.86= 50.55-18.67= 22.68-8.86= 26.71+16.8= 24.56-7.66= 16.46+27.82= 43.52+8.86= 3.67+50.3= 35.46+10.44= 30-6.45= 45-4.05= 34-5.2= 43.1+5.09= 53.2+1.2= 4.4+6.41= 45.23+1.67= 40-5.7=23.4-16.8= 26.43+16.56= 12.34-1.23=25.26-8.9= 43.73+17.62=17.3-8.74= 15.84+9.99= 16.73+8.3= 13.75+3.84= 23.01-8.3=12.3+4.5= 4.53+11.4= 46-4.6= 31.2+38= 3.45+25.5=4.23+7.21=39-4.9=39-12.5=6.8+54.2=5.6+56=21.21-19.12= 24.82+16.18= 5.86+18.59= 2.28+37.8= 15.8-14.79= 27.19-5.56= 19.89-8.26= 49.23-7.76= 35.59-16.6= 5.79+16.76= 4.8+7.6= 25.4-7.3= 1.72+3.5=8.9-4.6= 26.3-10.5= 2.5+4.9= 11.8+9.3= 3.12+6.9= 0.74-0.4= 8.5-6.8=4.3-2.1= 6.2+7.8= 6.45-4.8=5.97+25.4= 3.1-0.7= 4.12-3.76= 1.14+3.08= 1.06+5.08= 0.07+2.18= 35.3-4.7= 4.9-3.5= 5.01+6.4= 8.34-5.6= 6.7+2.1= 6.04+3.08= 3.58 +95.7= 4.05-2.4= 5.07+1.8= 9.27-6.5= 18.7-3.9= 5.7-0.63= 8.8-4.3= 3.07+5.09= 5.8-2.9= 5.9+0.5= 0.09+1.23= 5.5-1.9= 0.02+1.19= 6.2-3.5= 3.65+4.73= 2.17-1.05=7.51-8.3= 5.6-2.57= 8.4-5.05= 5.98-3.9= 2.06-8.01= 5.05+6.09= 5.4-3.08= 5.3-8.4= 5.96+9.7= 4.8+7.6= 5.4+7.3= 4.95+16.2= 6.3-4.4= 21.2-3.9= 2.56+4.18= 四年级口算（二十四） 四年级口算（二十三） 四年级口算（二十六） 四年级口算（二十五）8.6-4.8= 7.04-3.18=3.12-0.09=4.97+0.15=5.8+3.39= 3.3-7.6= 2.1-0.07= 0.6+1.8= 7.4-0.9= 4.5-0.67= 9.1+4.8= 7.2+3.9=6.09+93.5= 22.5+4.7=6.9-3.6=7.1-3.6=8.8+9.4= 8.5-6.7= 8.4-1.02=0.08+5.03=1.04-0.08= 4.2+3.59= 6.37-5.6= 27.6-2.5= 17.25+3.3=4.04-1.1= 75.06+1.9= 2.5+44.85= 19.8+5.42= 32.6-5.3= 44.6+4.4= 2.1+1.2= 67.45+5.5= 21.5+2.35=30.1-20.9= 23.4-2.48=5.9-0.08=6.3-5.29=6.5-1.53=7.4+5.16= 7.2+6.8= 7.21+6.97= 21.64+24.5=64.2-3.22=60.7-2.88=98.5-28. 6=60.1-7.9=8.92+5.7=98.8-4.5=98.3-67.7=9.9+43.9=3.3+89.6=2.77-1.5=4.78-0.77=20.2-7.09=24+9.18=10.89-10.25=1.1-0.55=2.22+0.8=2.2-0.75=54.78-10.24=50.42+20.98=2.34-1.2=66.37+8.5=67.3+10. 5=1.5+10.68=53.13+2. 4=6.3-3.85=78.2-2.4=10.3+87.97=98.3+4. 7=5.8+27.9=34.2+12.8=37.25-13.12=46.4+15.99=8.8-6.21=6.1-1.1=10.48+0.2=1.41-0.98=83.7+4.8=88.36+0.65=63.6+9.87=86.16+3.77=60.33+9.8=30.96-4.9=9. 5+0.74=81.4+10.8=10.5-2.7=36.8+0.8=0.82-0.28=5.7+10.03=86.7+35.9=7.3-3.78=56.9+2.79=35.85+8.04=30.07+39.65=11.83+62.7=3.8+9.9=54.29+27.1=98.3-2.3=10.7+0.93=5.64-0.44=1.6+68.42=85.8-56.6=1.4-0.14=64.64+36.36=40.99+61.9=54.86-7.77=34.9+7.08=5.14-0.99=7.5-4.18=0.7+5.4=83.3-5.8=7.81+5.6=65.3-1.75=8.7-0.98=0.5-0.03=5.4+3.86=4.3+20.9=22.1-1.88=5.27+34.2=3.38+51.3=5.22-4.26=16.22-1.8=四年级口算（二十八）四年级口算（二十七）。