贼吧网txt电子书怎么:口算练习题
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口算练习题
姓名
1(50%)、23+25= 32+65= 69+47= 78+12= 65+12= 45+45= 78+9= 69+21= 48+12= 32+14= 45+65= 12+78=
1.2+0.2= 3.6+3.2= 0.3+41= 4.6+1.4= 4.9+0.01= 1.45+0.5= 5.1+0.9= 6.1+4.5= 3.9+4.5= 6.8+1.02= 6.5+1.6= 3.9+0.1=
65-56= 32-12= 97-98= 96-93=
12-9= 45-45= 46-41= 32-12=
45-34= 98-90= 66-66= 77-66=
3.9-3.8= 12.4-12= 45.5-40. 4.8-1.4= 78-12= 45.6-5.6= 9.5-4.8= 4.8-3.8= 9.9-9.9= 0.45-0.4= 5.78-0.78= 12.3-12.03=
0.2×6= 1.2×5= 0.8×0.2= 0.6×0.6=
1.7×9= 3.01×5= 0.4×2.5= 0.25×4=
2.5×4= 0.04×25= 0.4×2.5= 2.5×4=
1.25×8= 0.125×8= 1.25×0.8= 12.5×0.8=
125×0.08= 0.125×8= 4.5×2= 0.45×20=
0.2×45= 0.45×2= 4.5×2= 4.5×20=
0.125×4= 1.25×4= 1.25×0.4= 12.5×40=
1.25×40= 125×4= 6.3÷6.3= 10÷5=
1.2÷4= 6.3÷6.3= 10÷5= 0.9÷3=
1.24÷1.24= 0÷9.5= 6.3÷3= 0.63÷3=
63÷3= 0.63÷0.3= 6.3÷30= 0.63÷30=
1÷2= 2÷1= 3÷1= 1÷3=
4÷1= 1÷4= 0×3.12= 98.96×1=
2(20%)、(45+65+25+48+12+48+49+43+47+36)÷10=
(12+12+13+15+17+18+13+20+21+18+19+21)÷12=
(30+32+31+33+30+32+30+34+35+31+33+30)÷12=
(56+56+56+56+45+45+45+45+52+52+52+52+53)÷13=
3、用竖式计算(30%)(每题2分,另3题每题4分)
0.32+1.32= 1.36+0.98= 9.65-7.65=
12.65-9.65= 9.05+45.2= 4.59-0.3=
(要求验算)
1.23×3.2= 0.32×1.36= 6.58÷0.4
65.7÷0.12 10÷7= 3.78÷1.8=
(用循环小数表示) (要求验算)