1、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*=10 ÷3×=*×= 二、用简便方法计算下面各题。(90分,4×20+5×2) 1125-997 998+1246
2、 4+3.2+5+6.8 12-(1+2) 400÷125÷8 25×(37×8) =1125-(1000-3) =(998+2)+(1246-2) =(4+5)+(3.2+6.8)=12-2-1 =400÷(125*8)=25*8*37 =1125-1000+3 =1000+1244 =10+10=20 =10-1=8 =400÷1000= =200*37=7400 =125+3=128 =2244 (
3、-)×12 1×2× 34×(2+) 125×8.8 4.35+4.25+3.65+3.75 3.4×99+3.4 =(-)*12 =×2× =34×2+34× =125*(8+0.8) =(4.35+3.65)+(4.25+3.75)=3.4*(99+1) =*12 =(×)*2 =68+13 =125*8+125*0.8 =8+8=16 =3.4*100=340 =1
4、 =1*2=2 =81 =1000+100=1100 17.15-8.47-1.53 17-3-4 ÷2+× 0.125×0.25×32 22.3-2.45-5.3-4.55 =17.15-(8.47+1.53) =17-4-3 =÷+× =**32 =22.3-5.3-(2.45+4.55) =17.15-10 =13-3=9 =*+×
5、 =1 =17-7=10 =7.15 =(+)×= (++)×72 4.25-3-(2-1) 187.7×11-187.7 43×+57.125×-0.5 ×(-÷) =×72+×72+×72 =4+1-(3+2) =187.7*(11-1) =43×+57×- =×(-*) =11*6+7*4+5*3 =6-6=0
6、 =1887 =(43+57-1) =*(-) =66+28+15 =*100=50 =*= =109 2.42÷+4.58×-4÷3 ×6.6+2.5× -- 4.6+++5.4 2.8++7.2+ -(+) =2.42*+4.58×-*1 =2*6+2*6 =-(+) =
7、4+3+6+5 =(2.8+7.2)+5+3= -- =(2.42+4.58-1) =2*2*6 =-8=3 =4+5+(3+6)=10+9=19 =2- =1 =*6=8 =10+10=20 +2.25++ ++ -+ +-++ 0.75+++0.375 5-- =4+2+5+7 =++
8、 =+- =+-+(+)=+++ =5-(+) =4+5+(2+7)=10+ =70-- =+5=5 =++(+)=2 =5-4=1 =10+10=20 =14 =53 ++++ 48.3-- ×4.25+÷6 0.625×0.5++×62.5% ×÷ +(-1.8) =(1+9+99+999+9999) = 48.3-(+)=9*4
9、4* =*+** =÷× =+(-1) =11107 =48-20=28 =(9+)*4 =*(++1) =1×= =-1+ =10*= =15+=18 2.5×(+++) 22×+25×75%-7×0.75 0.25×63.5-× ×2.5-×
10、 +3.125++ 1125-996 =2*4* =22*+25*-7* =*63-*13 =6*2-2*4 =++(3+)=1125-(1000-4) =*4*=10*=9 =(22+25+7)*= =*(63-13) =(6-4)*2 =5+5=10 =1125-1000+4 =*50=12 =2*=5
11、 =125+4=129 (111+999) ÷[56×(-)] 49.5×-(50-)×0.6 ×+÷+ 45×(+-0.6) 897×-37.5%+104×0.375 =[110+(1+999)]/(56×-56×)=49*-49× =×+*+ =45*(+-) =897×-+104× =(110+1000)÷(24-21) =49(10-) =(++1) =45*+45*-45* =(897-1+104)× =1110*
12、 =49*10=495 =*11=7 =35+12-27=20 =(896+104)×=1000×=375 ×(-5.375) 3.5×+1.25×+3.8÷ 72×156-56×72 25×32×125 709×99+709 299×101 =*(5-5) =3*1+1*2+3* =72*(156-56) =25*(8*4)*125 =709(99+1) =0
13、 =(3+2+3)* =72*100 =25*8*(4*125) =709*100 =(+2+)* =7200 =200*500=100000 =70900 =(+2+)* 563×999 71×99 3755+2996 8439+1001 446+295 888+999 2100÷20
14、 2×6.6+2.5×6 75.3×99+75.3 4.6×3.7+54×0.37 0.125×+×8.25+12.5% 8.37-3.25-(1.37+1.75) =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) =2(6+6) =75.3*100 =(4.6+5.4)*3.7 =(++1) =7-5=2 =2*12
15、 =7530 =10*3.7 =*2= =*=33 =37 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 =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/ =11-8 =3 =15-10
16、5 =19.82-10=9.82 =10+10=20 =10+10=20 =9.63/10=0.963 =6*4=24 3-- ×+× ×+÷ 18×(+) ×7+×5 (-)×(24-) =3-(+) =(+) =*+* =18*+18* =*(7+5) =*24-* =3-1=2 = =*+* =2*4+3*5 =*12
17、 =2-=1 =+= =8+15=23 =2*4=8 (×+)÷ ÷[(+)×] ×7+×5 ×[÷(×)] (+)×15×11 12×103-4500÷75 =(+1)** =/(+) =(7+5) = *(*) =*165+*165 =1 =*+*65 =2*4=8 =*=
18、 =2*11+3*15 =+13=16 =22+45=67 (32×+17)÷ (25+)÷+ ×+×+ (21×+×21)× (99+)÷9 ×÷ =(8+17)* =25*4+*4+ =(++1) =21(+)* =99*+* =** =25* =100+3+ =2*==1
19、 =21*=5 =11+=11 ==1 =5*12=60 =103 ÷[(+)×] (+)×30 +3÷ ×-÷ 4-- ×58+×41+ =/(*+*) =*30+*30 =+3*2 =1- =4-(+) =*(58+41+1) =/(+) =25+24=49 =6 =
20、 =4-1=2 =*100=12 =/=*= ××- ×+÷ ÷[(-)÷] 235 - 135÷18 ×153 – 0.6×53 (+)÷+ =- =+(*) =/(*) =*(153-53) = =*2=1 =/=*5=4 =*100=3*20=60 10 - - + 25×÷× 13.09-8.12-4.88 =10-(+)+=25*** =13.09-(8.12+4.88) =10-1+ ==6 =13.09-13=0.09 =9 7
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