Question

Mnożenie ułamków zwykłych klasa 6 w zawanczniku
Proszę pomocy na jutro zad 3

Answer 1

Odpowiedź:

a)

7/8 * 10/11 = 7/4 * 5/11 = 35/44

6/7 * 5/18 = 1/7 * 5/3 = 5/21

3/16 * 12/13 = 3/4 * 3/13 = 9/52

8/27 * 9/10 = 4/3 * 1/5 = 4/15

b)

2/35 * 2 1/7 = 2/35 * 15/7 = 2/7 * 3/7 = 6/49

3 5/9 * 5/24 = 32/9 * 5/24 = 4/9 * 5/3 = 20/27

4/21 * 2 4/5 = 4/21 * 14/5 = 4/3 * 2/5 = 8/15

1 7/35 * 5/36 = 42/35 * 5/36 = 7/7 * 1/6 = 1 * 1/6 = 1/6

c)

1 1/10 * 1 5/7 = 11/10 * 12/7 = 11/5 * 6/7 = 66/35 = 1 31/35

4 2/7 * 1 1/20 = 30/7 * 21/20 = 3 * 3/2 = 9/2 = 4 1/2

2 1/24 * 1 5/27 = 49/24 * 32/27 = 49/3 * 4/27 = 196/81 = 2 34/81

1 5/22 * 2 3/4 = 27/22 * 11/4 = 27/2 * 1/4 = 27/8 = 3 3/8

d)

15/36 * 27/40 = 3/4 * 3/8 = 9/32

18/49 * 6 2/9 = 18/49 * 56/9 = 2/7 * 8 = 16/7 = 2 2/7

3 22/25 * 2 3/16 = 97/25 * 35/16 = 97/5 * 7/16 = 679/80 = 8 39/80

3 3/8 * 4/9 = 27/8 * 4/9 = 3/2 = 1 1/2

Szczegółowe wyjaśnienie: