1.01×99+10.1 简算

问题描述:

1.01×99+10.1 简算

1.01×99+10.1
=10.1×9.9+10.1
=10.1×(9.9+1)
=10.1×10.9
=(10+0.1)×10.9
=109+1.09
=110.09