简便计算0.55乘七点5-0点5×6点五
答案:2 悬赏:50 手机版
解决时间 2021-02-25 21:17
- 提问者网友:几叶到寒
- 2021-02-24 21:04
简便计算0.55乘七点5-0点5×6点五
最佳答案
- 五星知识达人网友:山有枢
- 2021-02-24 22:19
0.55乘七点5-0点5×6点五
=(0.5+0.05)x7.5-0.5x6.5
=0.5x7.5+0.05x7.5-0.5x6.5
=0.5x(7.5-6.5)+0.375
=0.5x1+0.375
=0.5+0.375
=0.875
=(0.5+0.05)x7.5-0.5x6.5
=0.5x7.5+0.05x7.5-0.5x6.5
=0.5x(7.5-6.5)+0.375
=0.5x1+0.375
=0.5+0.375
=0.875
全部回答
- 1楼网友:英雄的欲望
- 2021-02-24 22:40
0.55*7.5-0.5*6.5
=0.5*(1.1*7.5-6.5)
=0.5*(8.25-6.5)
=0.5*1.75
=1.75/2
=0.875
=0.5*(1.1*7.5-6.5)
=0.5*(8.25-6.5)
=0.5*1.75
=1.75/2
=0.875
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