2,3/14 ×× 2/3 1/6
3,1/5 × 2/3 5/6
4.9/22 1/11 ÷ 1/2
5.5/3 × 11/5 4/3
6.4/7 × 5/9 3/7 × 5/9
7,5/2 - ( 3/2 4/5 )
8,7/8 ( 1/8 1/9 )
9,9 × 5/ 6 5 /6
10.3/4 × 8/9 - 1/3
11.7 × 5/49 3/14
12.6 ×( 1/2 2/ 3 )
13,8 × 4/5 8 × 11/5
14,31 × 5/6 – 5/6
15,9/7 - ( 2 /7 – 21/10 )
16,5/9 × 18 – 14 × 2/7
17,4/5 × 25/16 2/3 × 3/4
18,14 × 8/7 – 5/6 × 12/15
19,17/32 – 3/4 × 9/24
20,3 × 2/9 1/3< /p >