55.5×55.5减去44.5乘以44.5 用简便计算
答案:1 悬赏:70 手机版
解决时间 2021-03-30 12:24
- 提问者网友：皆是孤独
- 2021-03-29 15:32
55.5×55.5减去44.5乘以44.5 用简便计算
最佳答案
- 五星知识达人网友：持酒劝斜阳
- 2021-03-29 16:56
原式
=55.5x55.5-44.5x44.5
=55.5x(11+44.5)-44.5x44.5
=55.5x11+55.5x44.5-44.5x44.5
=55.5x11+(55.5-44.5)x44.5
=55.5x11+11x44.5
=(55.5+44.5)x11
=100x11
=1100
供参考。
=55.5x55.5-44.5x44.5
=55.5x(11+44.5)-44.5x44.5
=55.5x11+55.5x44.5-44.5x44.5
=55.5x11+(55.5-44.5)x44.5
=55.5x11+11x44.5
=(55.5+44.5)x11
=100x11
=1100
供参考。
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