1) 3 1/4 ÷ 13 = 13/4 × 1/13 = 1/4
2) 2 5/18 - 17/36 = 41/18 - 17/36 = 82/36 - 17/36 = 65/36 = 1 29/36
3) 2 ÷ 3 1/5 = 2/1 ÷ 16/5 = 2/1 × 5/16 = 5/8
4) 1/4 ÷ 2/3 = 1/4 × 3/2 = 3/8
5) 1 29/36 × 18/65 = 65/36 × 18/65 = 1/2
6) 5/8 + 3/8 = 8/8 = 1
7) 1 + 1/2 = 1 + 0,5 = 1,5
8) 1,5 × 1/3 = 15/10 × 1/3 = 5/10 = 1/2 = 0,5