1. 3 per 7 + 7 per 8 2. -7 per 9 - 3 3 5+ 3 per 4 4. 7 x 4 per 3 5. 6: 3 per 5 10. 2 per 3 : 5

1. 3/7 + 7/8
= 24/56 + 49/56
= 73/56
= 1 17/56

2. .....

3. 5 + 3/4
= 5/1 + 3/4
= 20/4 + 3/4
= 23/4
= 5 3/4

4. 7 × 4/3
= 7/1 × 4/3
= 28/3
= 9 1/3

5. 6 ÷ 3/5
= 6/1 × 5/3
= 30/3
= 10

10. 2/3 ÷ 5
= 2/3 ÷ 5/1
= 2/3 × 1/5
= 2/15