Question

32×2.48+1.6×50.4的简便运算是什么？

Answer 1

32×2.48+1.6×50.4

=1.6×20×2.48+1.6×50.4  ...........改写

=1.6×49.6+1.6×50.4

=1.6×（49.6+50.4）     ............乘法的分配律合并

=1.6×100

=160

Answer 2

=32×2.48+1.6×20×50.4÷20
=32×2.48+32×50.4÷20
=32×2.48+32×2.52
=32×（2.48+2.52）
=32×5
=160