六年级(上册)分数乘法的简便计算练习题
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六(上)数学分数乘法练习卷班级:姓名;
2、计算下面各题,能简算的要简算.
2 3×
1
5
×3 5×
4
7
×
3
5
2
5
×4 ×
3
4
(
2
20
+
1
5
)×5
(8
9
+
4
27
)×27 6 ×(
2
18
×
7
30
)(
3
8
-
3
8
)×
6
15
1
6
×(7 -
2
3
)
5 6×
5
9
+
5
9
×
1
6
2
9
×
3
4
+
5
27
×
3
4
6
13
×
7
5
-
6
13
×
2
5
21×
3
20
7 12×6 -
5
12
×6 37×
3
35
6
25
×24 (
3
5
+ 7 )×25
3 4×
1
2
+
3
4
×
2
5
5
7
-
4
9
×
5
7
1-
5
14
×
21
25
1
6
×(5 -
2
3
)
12×(7
24+
5
6
+
3
4
)
4
17
×(125 ×34)(
1
5
+
3
7
)×7 ×5 (24 +
8
3
)×
1 24
6 77×78
2
5
×
2
10
+
9
10
×0.4-2÷5×
1
10
2
3
×
1
5
×3 5×
4
7
×
3
5
2 5×4 ×
3
4
(
2
20
+
1
5
)×5 (
8
9
+
4
27
)×27 6 ×(
2
18
×
7
30
)
(3
8
-
3
8
)×
6
15
1
6
×(7 -
2
3
)
5
6
×
5
9
+
5
9
×
1
6
2
9
×
3
4
+
5
27
×
3
4
6 13×
7
5
-
6
13
×
2
5
7
12
×6 -
5
12
×6 21×
3
20
37×
3
35
6 25×24 (
3
5
+ 7 )×25
3
4
×
1
2
+
3
4
×
2
5
5
7
-
4
9
×
5
7
1-
5
14
×
21
25
1
2
+
6
4
×
4
6
1
6
×(5 -
2
3
)12×(
7
24
+
5
6
+
3
4
)