4.78×25.2-7.8×2.52的简便
答案:3 悬赏:50 手机版
解决时间 2021-04-08 02:58
- 提问者网友：捧腹剧
- 2021-04-07 14:01
4.78×25.2-7.8×2.52的简便
最佳答案
- 五星知识达人网友：野味小生
- 2021-04-07 14:40
4.78×25.2-7.8×2.52
=4.78x10x2.52-7.8x2.52
=47.8x2.52-7.8x2.52
=（47.8-7.8）x2.52
=40x2.52
=40x（2.5+0.02）
=40x2.5+40x0.02
=100+0.8
=100.8
=4.78x10x2.52-7.8x2.52
=47.8x2.52-7.8x2.52
=（47.8-7.8）x2.52
=40x2.52
=40x（2.5+0.02）
=40x2.5+40x0.02
=100+0.8
=100.8
全部回答
- 1楼网友：怀裏藏嬌
- 2021-04-07 16:56
4.78×25.2-7.8×2.52
=4.78×25.2-0.78×25.2
=(4.78-0.78)×25.2
=4×25.2
=100.8
=4.78×25.2-0.78×25.2
=(4.78-0.78)×25.2
=4×25.2
=100.8
- 2楼网友：笑迎怀羞
- 2021-04-07 15:47
4.78×25.2-7.8×2.52
=4.78x25.2-7.8x25.2x0.1
=4.78x25.2-0.78x25.2
=25.2x(4.78-0.78)
=25.2x4
=100.8
=4.78x25.2-7.8x25.2x0.1
=4.78x25.2-0.78x25.2
=25.2x(4.78-0.78)
=25.2x4
=100.8
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