0.279×258+0.742×279简便计算
答案:3 悬赏:70 手机版
解决时间 2021-01-07 06:48
- 提问者网友：玫瑰园
- 2021-01-06 19:24
0.279×258+0.742×279简便计算
最佳答案
- 五星知识达人网友：迷人又混蛋
- 2021-01-06 20:13
0.279×258+0.742×279
=0.279×258+742×0.279
=0.279x(258+742)
=0.279x1000
=279
【】
0.279×258+0.742×279
=279×0.258+0.742×279
=279x(0.258+0.742)
=279x1
=279
=0.279×258+742×0.279
=0.279x(258+742)
=0.279x1000
=279
【】
0.279×258+0.742×279
=279×0.258+0.742×279
=279x(0.258+0.742)
=279x1
=279
全部回答
- 1楼网友：蕴藏春秋
- 2021-01-06 21:29
0.279*258+0.742*279=279*0.258+0.742*279=279*（0.258+0.742）=279*1=279
- 2楼网友：思契十里
- 2021-01-06 20:46
0.279×258+0.742×279
=0.279×258+742×0.279
=0.279×(258+742)
=0.279×1000
=279
=0.279×258+742×0.279
=0.279×(258+742)
=0.279×1000
=279
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