六年级数学简便计算练习题答案
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创作编号:BG7531400019813488897SX 创作者: 别如克*
六年级数学总复习简便计算练习题
一、口算。(10分)
10-2.65=7.35 0÷3.8= 0 9×0.08= 0.72 24÷0.4=60 67.5+0.25=67.75 6+14.4=20.4
0.77+0.33=1.15-1.4-1.6=5-3=2 80×0.125=80*81=10 73
÷3×71=73*31×71=49
1
二、用简便方法计算下面各题。(90分,4×20+5×2)
1125-997 998+1246 431+3.2+532+6.8 1252-(172+25
2
) 400÷125÷8
25×(37×8)
=1125-(1000-3) =(998+2)+(1246-2) =(431+532)+(3.2+6.8)=1252-252-17
2
=400÷(125*8)
=25*8*37
=1125-1000+3 =1000+1244 =10+10=20 =10-172=875 =400÷1000=5
2
=200*37=7400 =125+3=128 =2244
(
41
-61)×12 143×2154×74 34×(2+3413) 125×8.8 4.35+4.25+3.65+3.75 3.4×99+3.4
=(246-244)*12 =47×2154×74 =34×2+34×3413 =125*(8+0.8) =(4.35+3.65)+(4.25+3.75)
=3.4*(99+1) =242*12 =(47×74)*2154 =68+13 =125*8+125*0.8 =8+8=16 =3.4*100=340
=1 =1*2154=215
4
=81 =1000+100=1100
17.15-8.47-1.53 1765-343-465 97÷251+115×9
2
0.125×0.25×32 22.3-
2.45-5.3-4.55
=17.15-(8.47+1.53) =1765-465-343 =97÷511+115×92 =81*4
1
*32 =22.3-5.3-(2.45+4.55)
=17.15-10 =13-343=941 =97*115+115×9
2
=1 =17-7=10
=7.15 =(97+92)×115=11
5
(
1211+187+245)×72 4.25-365-(261-14
3) 187.7×11-187.7 4387×21+57.125×21-0.5 3415 ×(57 -314 ÷3
4
) =
1211×72+187×72+245×72 =441+143-(365+26
1) =187.7*(11-1) =4387×21+5781×21-21 =34
15
×(57 -3
14 *3
4) =11*6+7*4+5*3 =6-6=0 =1887 =21(4387+578
1
-1)
=1549*(57 -7
2) =66+28+15 =2
1
*100=50
=1549*73=57 =109
2.42÷43+4.58×311-4÷3 212 ×6.6+2.5×635 1178 -613 -123 4.6+325 +635 +5.4 2.8+549 +7.2+35
9
445 -(245 +5
12
) =2.42*34+4.58×34-34*1 =221*653+221*653 =1178 -(613 +123 ) =453+352+653+55
2 =(2.8+7.2)+594+395=
445 -245 -5
12
=
34(2.42+4.58-1) =221*2*653 =117
8 -8=387 =453+552+(352+65
3)=10+9=19
=2- 5
12 =1
12
7 =34
*6=8 =10+10=20
438 +2.25+558 +734 725 +457 +235 53611 -1647 +16511 237 +359 -337 +149 +147 0.75+58 +1
4 +0.375
5-21417 -1317
=4
83+241+585+743 =725 +235 +457 =53611 +16511 -1647 =237 +147 -337 +(359 +14
9 )=43+85+41+8
3 =5-(214
17 +13
17 )
=483+585+(241+743)=10+457 =70--164
7 =74+5=574 =43+41+(85+83)=2 =5-4=1
=10+10=20 =1475 =537
3
45 +945 +9945 +99945 +999945 48.3-1516 -456 956 ×4.25+414 ÷6 0.625×0.5+58 +12 ×62.5% 3138 ×72513 ÷313
8 1645 +(24
7
-1.8)