六年级数学简便计算练习题答案 下载本文

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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=1.1

11311135-1.4-1.6=5-3=2 80×0.125=80*=10 ÷3×=*×=

78773749二、用简便方法计算下面各题。(90分,4×20+5×2)

122221125-997 998+1246 4+3.2+5+6.8 12-(1+2) 400÷125÷8 25×(37×8)

3357512222=1125-(1000-3) =(998+2)+(1246-2) =(4+5)+(3.2+6.8)=12-2-1 =400÷(125*8)=25*8*37

33557252=1125-1000+3 =1000+1244 =10+10=20 =10-1=8 =400÷1000= =200*37=7400

775=125+3=128 =2244

1344131(-)×12 1×2× 34×(2+) 125×8.8 4.35+4.25+3.65+3.75 3.4×99+3.4 464157346444137=(-)*12 =×2× =34×2+34× =125*(8+0.8) =(4.35+3.65)+(4.25+3.75)=3.4*(99+1)

24241573442474=*12 =(×)*2 =68+13 =125*8+125*0.8 =8+8=16 =3.4*100=340 24154744=1 =1*2=2 =81 =1000+100=1100

1515

5357152-3-4 ÷2+× 0.125×0.25×32 22.3-2.45-5.3-4.55 646951195537115211=17.15-(8.47+1.53) =17-4-3 =÷+× =**32 =22.3-5.3-(2.45+4.55)

6649511984317552=17.15-10 =13-3=9 =*+× =1 =17-7=10

449111197255=7.15 =(+)×=

991111 11757115134533

(++)×72 4.25-3-(2-1) 187.7×11-187.7 43×+57.125×-0.5 315 ×(7 -14 ÷4 ) 12182482266411757111141351453

=×72+×72+×72 =4+1-(3+2) =187.7*(11-1) =43×+57×- =315 ×(7 -14 *) 12182482822344661714952=11*6+7*4+5*3 =6-6=0 =1887 =(43+57-1) =*(7 -)

28815714937=66+28+15 =*100=50 =*=

21575=109

31137122345445

2.42÷+4.58×1-4÷3 22 ×6.6+2.5×65 118 -63 -13 4.6+35 +65 +5.4 2.8+59 +7.2+39 45 -(25 +12 )

344544413133232712445

=2.42*+4.58×-*1 =2*6+2*6 =118 -(63 +13 ) =4+3+6+5 =(2.8+7.2)+5+3= 45 -25 -12

993332525555574137322375

=(2.42+4.58-1) =2*2*6 =118 -8=3 =4+5+(3+6)=10+9=19 =2- 12 =1

12325855554=*6=8 =10+10=20 3

17.15-8.47-1.53 17

2

3532536453534451143 4 +2.25+5 +7 7 +4 +2 53 -16 +16 2 +3 -3 +1 +1 0.75+ + +0.375 5-2 -1 8845751171179797841717

3153351323565434354143=4+2+5+7 =75 +25 +47 =5311 +1611 -167 =27 +17 -37 +(39 +19 )=+++ =5-(217 +117 ) 84844848351344315354

=4+5+(2+7)=10+47 =70--167 =+5=5 =++(+)=2 =5-4=1 884477448853=10+10=20 =14 =53

77

4444415515135344

+9 +99 +999 +9999 48.3-15 -4 9 ×4.25+4 ÷6 0.625×0.5+ + ×62.5% 31 ×72 ÷31 16 +(2 -1.8) 55555666482813857

511151515441533544

=(1+9+99+999+9999) = 48.3-(15 +4 )=9*4+4* =*+** =31 ÷31 ×72 =16 +(2 -1)

566881357644682828533511511444554

=11107 =48-20=28 =(9+)*4 =*(++1) =1×72 =72 =16 -1+2

513135101066482257

=10*

9999311717817

2.5×( + + + ) 22× +25×75%-7×0.75 0.25×63.5- ×13 6 ×2.5-2 ×4 3 +3.125+1 +1 1125-996

1010101044215215998

17854413= =15+27 =18 4253519333111171171781

*4* =22*+25*-7* =*63-*13 =6*2-2*4 =39 +19 +(3+18 )=1125-(1000-4) 21044442421522158599371111771=*4*=10*=9 =(22+25+7)*= =*(63-13) =(6-4)*2 =5+5=10 =1125-1000+4 210104242215152115 =*50=12 =2*=5 =125+4=129

422=2

3