7.8×41.2+4.5×41.2+2.3×58.8的简算
答案:1 悬赏:70 手机版
解决时间 2021-03-16 22:30
- 提问者网友：做自己de王妃
- 2021-03-16 17:52
7.8×41.2+4.5×41.2+2.3×58.8的简算
最佳答案
- 五星知识达人网友：污到你湿
- 2021-03-16 19:04
=(7.8+4.5)x41.2+2.3x58.8
=12.3×41.2+2.3×58.8
=10x41.2+2.3x41.2+2.3x58.8
=412+2.3×〈41.2+58.8)
=412+2.3x100
=412+230
=642
=12.3×41.2+2.3×58.8
=10x41.2+2.3x41.2+2.3x58.8
=412+2.3×〈41.2+58.8)
=412+2.3x100
=412+230
=642
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