1) (8/11) × (11/13) = 88/1432) (7/10) × (25/27) = 175/2703) (5/7) ÷ (7) = 5/494) (16/25) ÷ (3/5) = (16/25) × (5/3) = 80/75 = 16/15
1) (8/11) × (11/13) = 88/143
2) (7/10) × (25/27) = 175/270
3) (5/7) ÷ (7) = 5/49
4) (16/25) ÷ (3/5) = (16/25) × (5/3) = 80/75 = 16/15