问一个数学题(要简算)0.9+99x0.9===89.91

问题描述:

问一个数学题(要简算)
0.9+99x0.9
=
=
=89.91

0.9+99x0.9
=0.9*(99+1)
=0.9*100
=90

题目错了吧

0.9+99x0.9
=0.9x(1+99)
=0.9x100
=90

0.9+99x0.9
=0.9×(1+99)
=0.9×100
=90