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0.9×99+0.9

答案:6  悬赏:60  手机版
解决时间 2021-04-01 14:10
  • 提问者网友:两耳就是菩提
  • 2021-03-31 15:23
0.9×99+0.9
最佳答案
  • 五星知识达人网友:行路难
  • 2021-03-31 16:33
0.9×99+0.9
=0.9×(99+1)
=0.9×100
=90
全部回答
  • 1楼网友:玩家
  • 2021-03-31 21:52
0.9×99+0.9
=0.9×(99+1) (乘法分配律)
=0.9×100
=90
  • 2楼网友:过活
  • 2021-03-31 20:21
肯定是90!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  • 3楼网友:罪歌
  • 2021-03-31 19:06
0.9×99+0.9
=0.9×(100-1)+0.9
=0.9×100-0.9×1+0.9
=90-0.9+0.9
90
  • 4楼网友:一叶十三刺
  • 2021-03-31 17:49
0.9*(100-1)+0.9=90-0.9+0.9=90
  • 5楼网友:时间的尘埃
  • 2021-03-31 16:46
0.9×99+0.9
=0.9×99+0.9×1
=0.9×(99+1)
=0.9×100
=90
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