脱式计算(有的可以简便算)

来源:百度知道 编辑:UC知道 时间:2024/05/25 12:46:45
4000-3456÷32×5 3.68-3.6×0.2+0.18 48×9.9+48×0.1

(1-3/4)÷0.25×4(6-6×2/3)÷12 2÷【7/12+(5/6-5/12)】

4000-3456÷32×5
=4000-108×5
=4000-540
=3460

3.68-3.6×0.2+0.18
=3.68-0.72+0.18
=3.14

48×9.9+48×0.1
=48×(9.9+0.1)
=48×10
=480

(1-3/4)÷0.25×4
=1/4÷0.25×4
=1/4×1/4×44
=1/4

(6-6×2/3)÷12
=(6-4)×1/12
=2×1/12
=1/6

2÷【7/12+(5/6-5/12)】
=2÷【7/12+5/12】
=2÷1
=2