1)
3/5 × 2/3 = 6/15 = 2/5
(am simplificat cu 3)
2)
3/5 × 9/6 = 27/30 = 9/10
(am simplificat cu 3)
3)
4/6 × 6/8 = 24/48 = 1/2
(am simplificat cu 24)
4)
11/12 × 24/33 = 1/12 × 24/3 = 1/12 × 8 = 8/12 = 2/3
5)
9/11 × 2 3/4 =
= 9/11 × (2×4+3)/4 =
= 9/11 × 11/4 =
= 9/4
6)
7 1/8 × 2 2/3 =
= (7×8+1)/8 × (2×3+2)/3 =
= 57/8 × 8/3 =
= 57/3 =
= 19
7)
4/9 × 11/7 × 25/10 =
= 44/63 × 5/2 =
= 22×5/63 =
= 110/63