简便计算7.5×2.3＋1.9×2.5 求解
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解决时间 2021-03-08 04:18
- 提问者网友：箛茗
- 2021-03-07 22:26
简便计算7.5×2.3＋1.9×2.5 求解
最佳答案
- 五星知识达人网友：渡鹤影
- 2021-03-07 23:01
7.5×2.3＋1.9×2.5
=3*2.5*2.3+1.9×2.5
=6.9*2.5+1.9×2.5
=(1.9+6.9)×2.5
=8.8*2.5
=4*2.2*2.5
=10*2.2
=22
=3*2.5*2.3+1.9×2.5
=6.9*2.5+1.9×2.5
=(1.9+6.9)×2.5
=8.8*2.5
=4*2.2*2.5
=10*2.2
=22
全部回答
- 1楼网友：迷人又混蛋
- 2021-03-08 05:07
7.5×2.3＋1.9×2.5
=7.5×0.4+7.5×1.9+1.9×2.5
=3+19=22
=7.5×0.4+7.5×1.9+1.9×2.5
=3+19=22
- 2楼网友：话散在刀尖上
- 2021-03-08 04:03
7.5*2.3+1.9*2.5
=(10-2.5)*2.3+1.9*2.5
=10*2.3-2.5*2.3+1.9*2.5
=23-(2.3-1.9)*2.5
=23-0.4*2.5
=23-1
=22
=(10-2.5)*2.3+1.9*2.5
=10*2.3-2.5*2.3+1.9*2.5
=23-(2.3-1.9)*2.5
=23-0.4*2.5
=23-1
=22
- 3楼网友：思契十里
- 2021-03-08 02:32
7.5×2.3＋1.9×2.5
=7.5×0.4+7.5×1.9+1.9×2.5
=3+19=22
=7.5×0.4+7.5×1.9+1.9×2.5
=3+19=22
- 4楼网友：鸠书
- 2021-03-08 01:36
7.5X2.3+1.9X2.5
=(10-2.5)X2.3+1.9X2.5
=10X2.3-2.5X2.3+1.9X2.5
=23-(2.3-1.9)X2.5
=23-0.4X2.5
=23-1
=22
=(10-2.5)X2.3+1.9X2.5
=10X2.3-2.5X2.3+1.9X2.5
=23-(2.3-1.9)X2.5
=23-0.4X2.5
=23-1
=22
- 5楼网友：封刀令
- 2021-03-08 00:08
7.5×2.3＋1.9×2.5
=(2.5×3)×2.3+1.9×2.5
=2.5×(3×2.3)+1.9×2.5
=2.5×6.9+1.9×2.5
=2.5×(6.9+1.9)
=2.5×8.8
=2.5×4×8.8÷4
=2.5×4×(8.8÷4)
=10×2.2
=22
=(2.5×3)×2.3+1.9×2.5
=2.5×(3×2.3)+1.9×2.5
=2.5×6.9+1.9×2.5
=2.5×(6.9+1.9)
=2.5×8.8
=2.5×4×8.8÷4
=2.5×4×(8.8÷4)
=10×2.2
=22
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