六年级数学总复习简便计算练习题一、口算
(10 分)10-= 0÷= 0 9×= 24÷=60 += 6+= +=--=5-3=2 80×=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 4++5+ 12-(1+2) 400÷125÷8 25×(37×8)=1125-(1000-3) =(998+2)+(1246-2) =(4+5)+(+)=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(-)×12 1×2× 34×(2+) 125× +++ ×99+=(-)*12 = ×2× =34×2+34× =125*(8+) =(+)+(+)=*(99+1)=*12 =( ×)*2 =68+13 =125*8+125* =8+8=16 =*100=340=1 =1*2=2 =81 =1000+100=1100-- 17-3-4 ÷2+× ××32 ---=(+) =17-4-3 =÷+× =**32 =(+)= =13-3=9 =*+× =1 =17-7=10= =(+)×=(++)×72 -3-(2-1) ×11- 43×+×- ×(-÷) =×72+×72+×72 =4+1-(3+2) =*(11-1) =43×+57×- =×(-*)=11*6+7*4+5*3 =6-6=0 =1887 =(43+57-1) =*(-)=66+28+15 =*100=50 =*==109÷+×-4÷3 ×+× -- +++ +++ -(+)=*+×-*1 =2*6+2*6 =-(+) =4+3+6+5 =(+)+5+3= --=(+) =2*2*6 =-