怎样简便就怎样计算(1)10-4.39+2.85(2)4.2+(5.75-
答案:1 悬赏:70 手机版
解决时间 2021-11-16 13:23
- 提问者网友:玫瑰园
- 2021-11-16 06:33
怎样简便就怎样计算(1)10-4.39+2.85(2)4.2+(5.75-
最佳答案
- 五星知识达人网友:旧脸谱
- 2021-11-16 07:39
(1)10-4.39+2.85
=5.61+2.85
=8.46
(2)4.2+(5.75-0.06)
=4.2+5.69
=9.89
(3)59.5-4.07×1.8
=59.5-7.326
=52.174
(4)0.25×0.7×0.8
=0.25×0.8×0.7
=0.2×0.7
=0.14
(5)0.56×99+0.56
=0.56×(99+1)
=0.56×100
=56
=5.61+2.85
=8.46
(2)4.2+(5.75-0.06)
=4.2+5.69
=9.89
(3)59.5-4.07×1.8
=59.5-7.326
=52.174
(4)0.25×0.7×0.8
=0.25×0.8×0.7
=0.2×0.7
=0.14
(5)0.56×99+0.56
=0.56×(99+1)
=0.56×100
=56
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