试题 试卷
题型:口算与估算 题类:常考题 难易度:普通
2018-2019学年小学数学北师大版四年级下册 3.6手拉手 同步练习
0.4×25= 9.9×10= 0.65×0.2=
50×0.74×0.2= 125×0.08= 80×0.05=
3.2×0.9+3.2= 0.8×1.25×6.2= 10.1×5.6-5.6×0.1=
0.125×7.2={#blank#}1{#/blank#}
1.6×0.5= ﹣ = 0.26×99+0.26= 3.9÷0.3=
﹣0.4= + = 1.2×2= 15×0.6=
25×0.63×4= + = 1﹣ = 7.8×2÷7.8×2=
①1.56-0.45+0.55
②3.56-0.2+6.44-4.8
③3.2+9.6÷0.32
④3.5×5.2+0.35×48
⑤1.25×0.32×25
⑥4.75×[60÷(3.24-3.04)]
100-99+98-97+…+2-1
=(100-99)+(98-97)+…+(2-1)
=1+1+…+1
仿照示例,用分组法计算:1.1÷2.2×4.4÷8.8×16.16÷32.32。
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