作业帮 > 数学 > 作业

计算题;4分之3*9分之8+3分之1 2/9*10-2/9 (3/5+9/10)*5/6 7/8*4/15*8 (3/4

来源:学生作业帮 编辑:百度作业网作业帮 分类:数学作业 时间:2024/05/25 09:49:14
计算题;4分之3*9分之8+3分之1 2/9*10-2/9 (3/5+9/10)*5/6 7/8*4/15*8 (3/4*8/9)*16 8/9*8+8/9
120*(1/2+1/3+1/4) 1/5*7/12+1/5*5/12
计算题;4分之3*9分之8+3分之1 2/9*10-2/9 (3/5+9/10)*5/6 7/8*4/15*8 (3/4
4分之3*9分之8+3分之1
=3分之2+3分之1
=1
2/9*10-2/9
=9分之2×9
=2
(3/5+9/10)*5/6
=3/2×5/6
=5/4
7/8*4/15*8
=28/15
(3/4*8/9)*16
=2/3×16
=32/3
8/9*8+8/9
=8/9×9
=8
120*(1/2+1/3+1/4)
=120×2分之1+120×3分之1+120×4分之1
=60+40+30
=130
1/5*7/12+1/5*5/12
=1/5×【7/12+5/12】
=1/5×1
=1/5