15.3×99怎么简算?

问题描述:

15.3×99怎么简算?

15.3*99
=15.3*(100-1)
=15.3*100-15.3*1
=1530-15.3
=137.7

15.3x(100-1)=1530-15.3

15.3×99
=15.3×(100—1)
=15.3×100—15.3×1
=1530—15.3
=137.7