四年级下册简便除法
第1个回答 2016-07-03
360÷24
=360÷6÷4
=60÷4
=15
240÷48
=240÷24÷2
=10÷2
=5
800÷32
=800÷8÷4
=100÷4
=25
630÷42
=630÷6÷7
=105÷5
=15本回答被网友采纳
=360÷6÷4
=60÷4
=15
240÷48
=240÷24÷2
=10÷2
=5
800÷32
=800÷8÷4
=100÷4
=25
630÷42
=630÷6÷7
=105÷5
=15本回答被网友采纳
