来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/20 19:14:10
7/15-7/15x34/35和3.5÷4+360×25%+0.25×36.5的简便运算
7/15-7/15x34/35
=7/15*(1-34/35)
=7/15*1/35
=1/15*1/5 (7与35约分得)
=1/75
3.5÷4+360×25%+0.25×36.5
=35/40+360/4+36.5/4
=35/40+90+365/40
=(35+365)/40+90
=400/40+90
=10+90
=100