1 直接写出结果。
(1) 2.4×0.05=
(2) 2.7÷0.03=
(3) 7.1×0.1=
(4) 3.9÷0.2=
(5) 0.58÷5.8=
(6) 0.125×0.16=
(7) 4.4÷1.1×0.4=
(8) 8.7×2.9÷0.29=
(9) 0.5×0.25×0.24=
(10) 1.79÷0.125÷0.8=
(1) 2.4×0.05=
(2) 2.7÷0.03=
(3) 7.1×0.1=
(4) 3.9÷0.2=
(5) 0.58÷5.8=
(6) 0.125×0.16=
(7) 4.4÷1.1×0.4=
(8) 8.7×2.9÷0.29=
(9) 0.5×0.25×0.24=
(10) 1.79÷0.125÷0.8=
答案
(1) 0.12
(2) 90
(3) 0.71
(4) 19.5
(5) 0.1
(6) 0.02
(7) 1.6
(8) 87
(9) 0.03
(10) 17.9
(2) 90
(3) 0.71
(4) 19.5
(5) 0.1
(6) 0.02
(7) 1.6
(8) 87
(9) 0.03
(10) 17.9
2 用竖式计算。
(1) $0.23×1.8=$
(2) $0.936÷0.72=$
(3) $0.76×1.4≈$
(用“四舍五入法”保留一位小数)
(4) $3.75÷7≈$
(用“四舍五入法”精确到十分位)
(5) $3.69×0.19≈$
(用“四舍五入法”精确到百分位)
(6) $10.1÷2.6≈$
(用“四舍五入法”保留两位小数)
(1) $0.23×1.8=$
(2) $0.936÷0.72=$
(3) $0.76×1.4≈$
(用“四舍五入法”保留一位小数)
(4) $3.75÷7≈$
(用“四舍五入法”精确到十分位)
(5) $3.69×0.19≈$
(用“四舍五入法”精确到百分位)
(6) $10.1÷2.6≈$
(用“四舍五入法”保留两位小数)
答案
(1) 0.414
(2) 1.3
(3) 1.1
(4) 0.5
(5) 0.70
(6) 3.88
(2) 1.3
(3) 1.1
(4) 0.5
(5) 0.70
(6) 3.88
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