Question

1.9✖️99➕1.9简便方法？

Answer 1

1.9×99+1.9的简便算法：
1.9×99+1.9=1.9×(99+1)
=1.9×100
=190

Answer 2

1.9*99+1.9，
=1.9*(99+1)，
=190。

Answer 3

1.9×99+1.9×1=1.9×（99+1）=1.9×100=190

Answer 4

1.9*99+1.9
=1.9*99+1.9*1
=1.9*(99+1)
=1.9*100
=190

Answer 5

1.9x99+1.9
=1.9x99+1.9x1
=1.9x(99+1)
=1.9x100
=190