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六年级数学简便计算练习题答案

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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 41573444137=(-)*12 =×2× =34×2+34× =125*(8+0.8) =(4.35+3.65)+(4.25+3.75)=3.4*(99+1)

24241574342474=*12 =(×)*2 =68+13 =125*8+125*0.8 =8+8=16 =3.4*100=340 241744=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 6951195537115211=17.15-(8.47+1.53) =17-4-3 =÷+× =**32 =22.3-5.3-(2.45+4.55)

69511984317552=17.15-10 =13-3=9 =*+× =1 =17-7=10

17.15-8.47-1.53 17

44911119=7.15 =(72559+9)×11=11

(117512+18+24)×72 4.25-356-(2136-14) 187.7×11-187.7 43=1112×72+718×72+524×72 =414+134-(356+216) =187.7*(11-1) =43=11*6+7*4+5*3 =6-6=0 =1887 ==66+28+15 ==109

2.42÷34+4.58×113-4÷3 2137122 ×6.6+2.5×65 118 -63 -13 =2.42*43+4.58×43-43*1 =212*63137125+22*65 =118 -(63 +13 )=4133(2.42+4.58-1) =22*2*65 =117-8=378 8 ==43*6=8 =10+10=20

78×12+57.125×12-0.5 34533

15 ×(7 -14 ÷4 ) 78×12+5718×12-12 =345 -3

415 ×(714 *3) 12(4378+5718-1) =495215*(7 -7)

12*100=50 =4915*37=75

4.6+323 2.8+5 4445

5 +65 +5.4 9 +7.2+39 5 -(25 +12 )

=43232445+35+65+55 =(2.8+7.2)+59+39= 45

5 -25 -12

435+525+(3235

75+65)=10+9=19 =2- 12 =112

35325353534451143 4 +2.25+5 +7 7 +4 +2 53 -16 +16 2 +3 -3 +1 +1 0.75+ + +0.375 5-2 -1 8845751171179797841717

315335132356343143=4+2+5+7 =75 +25 +47 =5311 +1611 -167 =27 +17 -37 +(39 +19 )=+++ =5-(217 +117 ) 848448483513443153

=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) 555556682813857

51115151415334

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

56688135746828285335115114445

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

5131351010682257

=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

44178513= =15+27 =18

23519333111171171781

*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

33317147743

(111+999) ÷[56×( - )] 49.5×10 -(50- )×0.6 ×4 +5 ÷1 + 45×( + -0.6) 7× -37.5%+104×0.375

78521119197119158

137433333331714577

=[110+(1+999)]/(56× -56× )=49*10 -49 × = ×4 +5 * + =45*(+-) =7×-+104×

7852111919111125915588813374337145(10-) = (4 +5 +1) =45*+45*-45* =(7-1+104)×

=(110+1000)÷(24-21) =49255=1110*13 =4912*10=495 =

314 ×(538 -5.375) 3.5×1174

4 +1.25×210 +3.8÷5

=

133311174*(58-58) =32*14+14*210+345* =0 =(317452+210+35)*4 =(771952+210+5)*4 =(35738510+210+10)*4

563×999 71×99 3755+2996

111919915587

11 *11=7 =35+12-27=20 =(6+104)×38=1000×38=375

72×156-56×72 25×32×125 709×99+709 299×101 =72*(156-56) =25*(8*4)*125 =709(99+1) =72*100 =25*8*(4*125) =709*100

=7200 =200*500=100000 =70900

8439+1001 446+295 888+999 2100÷20 1331

2×6.6+2.5×6 75.3×99+75.3 4.6×3.7+×0.37 0.125×+×8.25+12.5% 8.37-3.25-(1.37+1.75) 28131313111=2*6+2*6 =75.3*(99+1) =4.6*3.7+5.4*3.7 =*+*8+ =8.37-1.37-(3.25+1.75) 252584848133131=2(6+6) =75.3*100 =(4.6+5.4)*3.7 =(++1) =7-5=2 2558441611=2*12 =7530 =10*3.7 =*2= 2584566=*=33 =37 25 7123323353

11―6―1 15―4.25―5 19.82―6.57―3.43 4.6+3+6+5.4 4+2.25+5+7 9.63÷2.5÷4 6÷0.25 833144558847123132335131=11-(6+1)=15-(4+5)=19.82-(6.57+3.43)=4.6+5.4+(3+6)=4+5+(2+7)=9.63/(2.5*4) =6/

833144455884447733=11-8 =3 =15-10=5 =19.82-10=9.82 =10+10=20 =10+10=20 =9.63/10=0.963 =6*4=24

881414

7553558551045221143-- ×+××+÷18×(+) ×7+×5 (-)×(24-)

88612121277 1516279 96335755351159452114=3-(+) =(+) =*+* =18*+18* =*(7+5) =*24-*

121278832271096312125511112114=3-1=2 = =*+* =2*4+3*5 =*12 =2-=1

7323231515111 =+= =8+15=23 =2*4=8

663

441211221131023

(×+)÷ ÷[(+)×] ×7+×5 8 ×[2 ÷(5 ×9 )] (15 +11 )×15×11 12×103-4500÷75

577773513337121132321=(+1)** =/(+) =(7+5) = *(*) =*165+*165

774538221511396551391133=1 =*+*65 =2*4=8 =*= =2*11+3*15 75258432939 =+13=16 =22+45=67

1010

3111517993419455+17)÷(25+)÷+×+×+(21×+×21)× (99+)÷9 ×÷

8 412 774104 2516251616

31187934119145812=(8+17)* =25*4+*4+ =(++1) =21(+)* =99*+* =**

44252516774910956551219911111161=25* =100+3+ =2*==1 =21*=5 =11+=11 ==1

168844101015151=5*12=60 =103

4 14421011569957111÷[(+)×] (+)×30 +3÷×-÷ 4-- ×58+×41+

8388155311652 6510511111441021011571=/(*+*) =*30+*30 =+3*2 =1- =4-(+) =*(58+41+1) 15511311653211118148201111011=/(+) =25+24=49 =6 = =4-1=2 =*100=12 1511333211118214441437=/=*= 1533110(32×

44514523451534177××- ×+÷ ÷[(-)÷] 235 - 135÷18 ×153 – 0.6×53 ( + )÷ +

531082857425655122183=- =+(*) =/(*) =*(153-53) 7235358551214143= =*2=1 =/=*5=4 =*100=3*20=60 1433 10 -

719 - 1219 + 119 25×153

3 ÷2 ×10

=10-(

719+1219)+115319=25*3*2*10 =13.09-=10-1+125119 =4= =13.09-13=0.09

=9119

5555 13.09-8.12-4.88 (8.12+4.88)

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