0.9x98+0.9可以用简便方法吗
答案:7 悬赏:10 手机版
解决时间 2021-01-20 04:47
- 提问者网友:wodetian
- 2021-01-19 13:36
0.9x98+0.9可以用简便方法吗
最佳答案
- 五星知识达人网友:想偏头吻你
- 2021-01-19 14:31
这个题用乘法分配律
0.9x98+0.9
=0.9x(98+1)
=0.9x(100-1)
=0.9x100-0.9x1
=90-0.9
=89.1追答发过去了,望采纳
0.9x98+0.9
=0.9x(98+1)
=0.9x(100-1)
=0.9x100-0.9x1
=90-0.9
=89.1追答发过去了,望采纳
全部回答
- 1楼网友:神鬼未生
- 2021-01-19 19:34
可以
0.9x98+0.9
=0.9x(100-2)
=0.9x100-0.9x2
=90-1.8
=88.2
或者:
0.9x98+0.9
=(1-0.1)x98
=1x98-0.1x98
=98-9.8
=98-10+0.2
=88.2
0.9x98+0.9
=0.9x(100-2)
=0.9x100-0.9x2
=90-1.8
=88.2
或者:
0.9x98+0.9
=(1-0.1)x98
=1x98-0.1x98
=98-9.8
=98-10+0.2
=88.2
- 2楼网友:舍身薄凉客
- 2021-01-19 18:08
0.9x98+0.9
=(98+1)x0.9
=99x0.9
=100x0.9-0.9
=90-0.9
=89.1
=(98+1)x0.9
=99x0.9
=100x0.9-0.9
=90-0.9
=89.1
- 3楼网友:西风乍起
- 2021-01-19 16:55
=0.9×(98+1)
=0.9×99
=0.9×100-0.9
=90-0.9
=89.1
=0.9×99
=0.9×100-0.9
=90-0.9
=89.1
- 4楼网友:罪歌
- 2021-01-19 16:22
0.9x98+0.9
=0.9×98+0.9×1
=0.9×(98+1)
=0.9×99
=89.8追答89.1
=0.9×98+0.9×1
=0.9×(98+1)
=0.9×99
=89.8追答89.1
- 5楼网友:何以畏孤独
- 2021-01-19 15:59
0.9x98+0.9
=0.9x(98+1)
=0.9x99
=0.9x(100-1)
=0.9x100-0.9x1
=90-0.9
=89.1
=0.9x(98+1)
=0.9x99
=0.9x(100-1)
=0.9x100-0.9x1
=90-0.9
=89.1
- 6楼网友:人间朝暮
- 2021-01-19 15:42
0.9x98+0.9可以用简便方法吗
=0.9×(98+1)
=0.9×99
=0.9×100-0.9
=90-0.9
=89.1
=0.9×(98+1)
=0.9×99
=0.9×100-0.9
=90-0.9
=89.1
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