18.75减0.23乘以2减4.54和(4.2加4.2除以2.1)除以0.2和0.5乘以【(0.09加1.29)除以0.23】能不能简便?
答案:1 悬赏:10 手机版
解决时间 2021-01-16 18:58
- 提问者网友:练爱
- 2021-01-15 19:33
18.75减0.23乘以2减4.54和(4.2加4.2除以2.1)除以0.2和0.5乘以【(0.09加1.29)除以0.23】能不能简便?
最佳答案
- 五星知识达人网友:醉吻情书
- 2021-01-15 19:44
能简便
18.75-0.23×2-4.54
=18.75-0.46-4.54
=18.75-(0.46+4.54)
=13.75
4.2+4.2÷2.1÷0.2
=4.2+4.2÷(2.1×0.2)
=4.2+4.2÷0.42
=4.2+10
=14.2
0.5×(0.09+1.29)÷0.23
=0.5×1.38÷0.23
=0.5×6
=3
18.75-0.23×2-4.54
=18.75-0.46-4.54
=18.75-(0.46+4.54)
=13.75
4.2+4.2÷2.1÷0.2
=4.2+4.2÷(2.1×0.2)
=4.2+4.2÷0.42
=4.2+10
=14.2
0.5×(0.09+1.29)÷0.23
=0.5×1.38÷0.23
=0.5×6
=3
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