Question

二点四乘以零点八减四点四八除以二点八简便方法

Answer 1

2.4×0.8-4.48÷2.8
=2.4×0.8-1.6
=2.4×0.8-0.8×2
=0.8×(2.4-2)
=0.8×0.4
=0.32