早教吧 育儿知识 作业答案 考试题库 百科 知识分享

分拆.48×6=5×215=945÷9=723÷5=

题目详情
分拆.
48×6=
5×215=
945÷9=
723÷5=
▼优质解答
答案和解析
(1)48×6,
=(40+8)×6,
=40×6+8×6,
=240+48,
=288;

(2)5×215,
=5×(200+15),
=5×200+5×15,
=1000+75,
=1075;

(3)945÷9,
=(900+45)÷9,
=900÷9+45÷9,
=100+5,
=105;

(4)723÷5,
=(700+23)÷5,
=700÷5+23÷5,
=140+4…3,
=144…3.