4.2÷28怎么简算?
问题描述:
4.2÷28怎么简算?
答
4.2÷28
=(0.6×7)÷(4×7)
=0.6÷4
=0.15
4.2÷28怎么简算?
4.2÷28
=(0.6×7)÷(4×7)
=0.6÷4
=0.15