简便计算(1) 5.23÷4-3.23×0.25 (2) 4.2×6.5÷1.3

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/22 21:06:35
简便计算(1)5.23÷4-3.23×0.25(2)4.2×6.5÷1.3简便计算(1)5.23÷4-3.23×0.25(2)4.2×6.5÷1.3简便计算(1)5.23÷4-3.23×0.25(2)

简便计算(1) 5.23÷4-3.23×0.25 (2) 4.2×6.5÷1.3
简便计算(1) 5.23÷4-3.23×0.25 (2) 4.2×6.5÷1.3

简便计算(1) 5.23÷4-3.23×0.25 (2) 4.2×6.5÷1.3
(1) 5.23÷4-3.23×0.25
=5.23×0.25-3.23×0.25
=(5.23-3.23)×0.25
=2×0.25
=0.5
(2) 4.2×6.5÷1.3
=4.2×5×1.3÷1.3
=4.2×5
=21