12.8*34.5+12.8*12.3+46.8*87=?
答案:6 悬赏:30 手机版
解决时间 2021-01-14 22:53
- 提问者网友：凉末
- 2021-01-14 18:58
12.8*34.5+12.8*12.3+46.8*87=?
最佳答案
- 五星知识达人网友：大漠
- 2021-01-14 19:11
12.8*34.5+12.8*12.3+46.8*87
=12.8*(34.5+12.3)+46.8*87
=12.8*46.8+46.8*87
=(12.8+87)*46.8
=99.8*46.8
=(100-0.2)*46.8
=100*46.8-0.2*46.8
=4680-9.36
=4670.64
=12.8*(34.5+12.3)+46.8*87
=12.8*46.8+46.8*87
=(12.8+87)*46.8
=99.8*46.8
=(100-0.2)*46.8
=100*46.8-0.2*46.8
=4680-9.36
=4670.64
全部回答
- 1楼网友：大漠
- 2021-01-14 22:26
4670.64
- 2楼网友：蕴藏春秋
- 2021-01-14 21:35
4 670.64
- 3楼网友：玩家
- 2021-01-14 20:04
先前两项相加，得到46.8*12.8，再和第三项合并
- 4楼网友：蓝房子
- 2021-01-14 19:49
＝12.8x(34.5+12.3)+46.8x87.2=12.8x46.8+46.8x87=46.8x(12.8+87.2)=46.8x100=4680
- 5楼网友：拾荒鲤
- 2021-01-14 19:33
12.8*34.5 12.8*12.3 46.8*87
=12.8*(34.5 12.3) 46.8*87
=12.8*46.8 46.8*87
=(12.8 87)*46.8
=99.8*46.8
=(100-0.2)*46.8
=100*46.8-0.2*46.8
=4680-9.36
=4670.64
=12.8*(34.5 12.3) 46.8*87
=12.8*46.8 46.8*87
=(12.8 87)*46.8
=99.8*46.8
=(100-0.2)*46.8
=100*46.8-0.2*46.8
=4680-9.36
=4670.64
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