文档介绍:分数乘法计算题练****br/>7×
8
21
=
4
5
×
5
16
= 8 ×
1
8
=
2
5
× 10=
3
8
2
× 24= 2
15
×
5
6
=
4
9
×
3
8
=
3
4
×
8
9
=
11
12
×
36
121
= 15 ×
1
5
=
5
8
× 12= 15
5
7
×
2
5
=
56×
9
14
=
4
9
×
3
8
=
25
121
×
11
50
=
3
4
×
1
2
= 3
3
× 22= × 5
11
1
6
=
×
3
4
=
5
8
× =
7
12
×
4
7
= 1
3
8
× 8= 1
5
6
× 3= 1
4
9
× 18=
3
4
×
5
9
×
2
15
=
8
× - = 1
11
4
7
× 21=
3
4
× 1
1
5
= × 1
5
9
=
1
3
4
× 1
1
7
× 2
1
2
= 1
3
4
×
6
11
×
2
21
= 2
1
3
×
26
36
×
10
13
=
5
6
× 24=
2
× 2 = 14 × 4
11
4
7
= 2
5
6
× 12=
4
9
× 7
1
2
= ×
3
4
=
150×
2
15
=
11
15
×5= 27 ×
5
18
=
9
20
×15= 19 ×
1
2
=
72×
5
12
=
17
24
×
9
34
=
18
25
×
5
16
=
17
19
×
38
51
=
19
36
×24=
48×
13
16
=
26
63
×
28
39
= 28×
7
8
= 8
1
7
×= ×
4
13
=
1
2
3
× = 1
3
8
× = ×1
5
6
= × 2
6
17
= 3
1
7
× =
2
4
7
× = × 1
3