zad 2 4 * 2/3 = 8/3 = 2 2/3 6 * 3/5 = 18/5 = 3 3/5 zad 3 7 * 2/3 =14/3 = 4 2/3 8 * 3/20 = 24/20 = 1 4/20 = 1 1/5 4/5 * 9 = 36/5 = 7 1/5 9/17 * 6 = 54/17 = 3 3/17 zad4 4* 5 1/3 = 4 * 16/3 = 64/3 = 21 1/3 9 * 3 1/5 = 9 * 16/5 = 144/5 = 28 4/5 2 3/7 * 4 = 17/7 * 4 = 68/7 = 9 5/7 zad5 2/5 * 35 = 14/1 = 14 3 * 2 5/6 = 3 * 17/6 = 17/2 = 8 1/2 2 * 5 3/4 = 2 * 23/4 = 23/2 = 11 1/2
Zad 2. a) 4 * 2/3 = 2/3 + 2/3 + 2/3 + 2/3 = 8/3= 2 i 2/3 b) 6 * 3/5= 3/5 + 3/5+3/5+3/5 + 3/5 + 3/5= 18/5 = 3 i 3/5 zad 3. a) 7 * 2/3 = 14/3= 4 i 2/3 b) 8 * 3/20 = 2 * 3/5= 6/5 = 1 i 1/5 c) 4/5 * 9 = 36/5= 7 i 1/5 d) 9/17 * 6 = 54/17 = 3 i 3/17 zad 4 a) 4 * 5 i 1/3 = = 4 * 16/3= 64/3 = = 21 i 1/3 b) 9 * 3 i 1/5 = = 9 * 16/5 = = 144/5= = 28 i 4/5 c) 2 i 3/7 * 4 = =17/7 * 4= =68/7 = = 9 i 5/7 zad 5 oblicz, wykonując skracanie jeśli to możliwe b) 2/5 * 35 = = 2/1 * 7= = 14/1= = 14 c) 3 * 2 i 5/6 = = 3 * 17/6= = 1 * 17/2= = 17/2= = 8 i 1/2 d) 2 * 5 i 3/4 = = 2 * 23/4= = 1 * 23/2= = 23/2= = 11 i 1/2