计算下面各题．①15.52-1.6×5-5.7②[
答案:1 悬赏:30 手机版
解决时间 2021-01-10 19:55
- 提问者网友：心如荒岛囚我终老
- 2021-01-10 02:40
计算下面各题．①15.52-1.6×5-5.7②[
最佳答案
- 五星知识达人网友：拾荒鲤
- 2021-01-10 03:04
①15.52-1.6×5-5.7
=15.52-8-5.7
=7.52-5.7
=1.82
②[（6.1-4.6）-0.8]×0.4
=[1.5-0.8]×0.4
=0.7×0.4
=0.28
③0.8×（4-3.38）×5
=0.8×0.62×5
=（0.8×5）×0.62
=4×0.62
=2.48
④15.4÷[8×（6.34-4.59）]
=15.4÷[8×1.75]
=15.4÷14
=1.1．
=15.52-8-5.7
=7.52-5.7
=1.82
②[（6.1-4.6）-0.8]×0.4
=[1.5-0.8]×0.4
=0.7×0.4
=0.28
③0.8×（4-3.38）×5
=0.8×0.62×5
=（0.8×5）×0.62
=4×0.62
=2.48
④15.4÷[8×（6.34-4.59）]
=15.4÷[8×1.75]
=15.4÷14
=1.1．
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