Str. 36 ćw. 59 c) d) Matematyka z plusem 5 Zbiór zadań Oblicz, SKRACAJĄC UŁAMKI: 6x 2 3/4 7x 5 3/14 4 17/15 x 6 2 5/27 x 18

6 * 2 3/4 = 6 * 11/4 = 3 * 11/2 = 33/2 = 16 1/2  7 * 5 3/14 = 7 * 73/14 = 1 * 73/2 = 73/2 = 36 1/2 4 17/15 * 6 = 77/15 * 6 = 77/5 * 2 = 154/5 = 30 4/5 2 5/27 * 18 = 140/27 * 18 = 140/3 * 2 = 280/3 = 93 1/3

6 × 2 3/4 = 16 1/2  7 ×5 3/14 = 36 1/2 4 17/15 × 6 = 30 4/5 2 5/27 × 18 = 93 1/3