6.9×1.8×4的简便算法
答案:2 悬赏:70 手机版
解决时间 2021-11-27 03:32
- 提问者网友：人生佛魔见
- 2021-11-26 21:16
6.9×1.8×4的简便算法
最佳答案
- 五星知识达人网友：七十二街
- 2021-11-26 22:29
6.9x1.8x4
=1.8x4x6.9
=7.2x6.9
=7.2x7-7.2x0.1
=50.4-0.72
=50-0.32
=49.68
=1.8x4x6.9
=7.2x6.9
=7.2x7-7.2x0.1
=50.4-0.72
=50-0.32
=49.68
全部回答
- 1楼网友：詩光轨車
- 2021-11-26 23:00
6.9X1.8X4
=(7-0.1)X7.2
=7X7.2-0.1X7.2
=50.4-0.72
=50.4-1+0.28
=49.68
=(7-0.1)X7.2
=7X7.2-0.1X7.2
=50.4-0.72
=50.4-1+0.28
=49.68
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