文档介绍:分数乘法计算练****题
一、分数与整数相乘。
5
6
11
12 ×4=
26
×13 =
15 ×5=
13
2
3
24×=
×7=
× 20=
48
21
10
4
7
×12=
16
9
25
× 15=
×=
18
20
13
14
10
17×51
=
15
×30=
11 × 121=
16
× 54=
11
9
14
× 20=
27
×22
=
15
18
× 38=
36
5
100
24
19
×27 =
×25 =
二、分数和分数相乘。(注意:能约分的先约分,再计算。 )
2
3
6
7
5
8
5 ×4
=
7×8=
9×15=
9
×
7
=
12
×
15
=
4
×
9
=
11
15
25
16
5
10
2
15
7
5
4
27
3 ×16
=
8×21=
9×16=
14
25
20
3
7
18
15
× 21
=
27 ×8
=
9
× 35
=
6
22
17
45
19
11
11 ×15
=
27 ×68
=
33
×38 =
8
17
13
7
8
27
17 ×20
=
21 ×26 =
9
× 40
=
13
38
9
50
12
17
19
× 39
=
10 ×63
=
34
×36 =
1
三、分数乘、加、减混合。
7
50
2
4
15
5
3
2
5
4
16 ×(63 -7)
5 ×16
× 14
6×4+1
3 +12 ×15
9
5
27
18
38
6
5
19
8
14
- 9
× 35
1 -19
× 45
15
×( 5-13 )
91
× 7+13
四、分数乘、加、减简便运算。
13
7
(
5
11
9
17
15
×× 5
8
+ )×24
14
××14
26
12
18
5
4
97
9
7
9
( 6
-9 ) ×36
99×
98
13 -18 × 13
6
7
8
4
3
9
11
7
×12× 12
15 ×7
× 16
11 ×97× 9
3
7
5
3
5
7
7
4
12
7
8
×12
+12 ×8
17
×9
+ 9
×17
25
×15-