25道分数乘分数的计算题,15道分数乘整数的计算题.

1.3/7 × 49/9 2.8/9× 15/36
3.12× 5/6 4.8× 5/4
5.6 ×3/8 6.4/7 × 5/9
7.3/2 ×4/5 8.7/8 ×1/8
9.9 × 5/6 + 5/6 10.3/4 × 8/9 - 1/3
11.7 × 5/49 12.6 × 1/2
13.8 × 4/5 14.31 × 5/6
15.9/7 × 2/7 16.5/9 × 18
17.4/5 × 25/16 + 2/3 ×3/4 18.5/6 × 12/15
19.3/4 × 9/24 20.3 × 2/9 +1/3
21.5/7 × 3/25 22.3/14 ×2/3
23.1/5 × 2/3 24.1/11 ×1/2
25.5/3 × 11/5 26.45 × 2/3
27.12/19 × 5/6 28.3/4 × 2/3
29.8/7 × 21/16 30.115 × 1/5