用自己喜欢的方法计算. 63÷0.25÷0.4  ...
答案:1 悬赏:70 手机版
解决时间 2021-02-27 05:03
- 提问者网友:容嬷嬷拿针来
- 2021-02-26 19:22
用自己喜欢的方法计算. 63÷0.25÷0.4  ...
最佳答案
- 五星知识达人网友:廢物販賣機
- 2021-02-26 19:48
①63÷0.25÷0.4
=63÷(0.25×0.4)
=63÷0.1
=630
②0.75×7.4-0.75×6.4
=0.75×(7.4-6.4)
=0.75×1
=0.75
③1.35+2.04×4.5
=1.35+9.18
=10.53
④2.5×[1.38÷(6.9×5)]
=2.5×(1.38÷34.5)
=2.5×0.04
=0.1
⑤3.6×0.65+0.36×3.5
=3.6×0.65+3.6×0.35
=3.6×(0.65+0.35)
=3.6×1
=3.6
⑥54÷(3.94+6.86)
=54÷10.8
=5
=63÷(0.25×0.4)
=63÷0.1
=630
②0.75×7.4-0.75×6.4
=0.75×(7.4-6.4)
=0.75×1
=0.75
③1.35+2.04×4.5
=1.35+9.18
=10.53
④2.5×[1.38÷(6.9×5)]
=2.5×(1.38÷34.5)
=2.5×0.04
=0.1
⑤3.6×0.65+0.36×3.5
=3.6×0.65+3.6×0.35
=3.6×(0.65+0.35)
=3.6×1
=3.6
⑥54÷(3.94+6.86)
=54÷10.8
=5
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