0.37×6.5 2.5×1.7 6.3×3.15的简便计算
答案:1 悬赏:50 手机版
解决时间 2021-11-08 04:27
- 提问者网友：浩歌待明月
- 2021-11-07 06:14
0.37×6.5 2.5×1.7 6.3×3.15的简便计算
最佳答案
- 五星知识达人网友：酒者煙囻
- 2021-11-07 07:52
0.37×6.5
=0.4×6.5-0.03×6.5
=2.6-0.195
=2.405
2.5×1.7
=2×1.7+0.5×1.7
=3.4+0.85
=4.25
6.3×3.15
=6×3.15+0.3×3.15
=18.9+0.945
=19.845
=0.4×6.5-0.03×6.5
=2.6-0.195
=2.405
2.5×1.7
=2×1.7+0.5×1.7
=3.4+0.85
=4.25
6.3×3.15
=6×3.15+0.3×3.15
=18.9+0.945
=19.845
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