(
| [8/13 |
1 |
7 |
1 |
7 |
6 | |
13]= | [7/10 |
3 |
10 |
1 |
6]= |
[5/6 |
1 |
6]-[5/6 |
30123 幼苗
共回答了19个问题采纳率:73.7% 举报
(1)([3/5+
1
6])×30,
=30×[3/5+30×
1
6],
=18+5,
=23;
(2)[8/13×
1
7+
1
7×
6
13],
=[1/7×(
8
13+
6
13]),
=[1/7×
14
13],
=[2/13];
(3)[7/10+
3
10×
1
6],
=[14/20]+
1
20,
=[3/4],;
(4)[5/6÷
1
6−
5
6÷5,
=
5
6]×6−
5
6×
1
5,
=5−
1
6,
=4[5/6];
(5)[5/9×
3
4÷
5
6],
=[5/12×
6
5],
=0.5;
点评:
本题考点: 分数的四则混合运算.
考点点评: 本题运用分数的加减,乘除法的计算法则进行计算即可.
1年前
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