Question

Matematyka zadanie 4 oblicz w pamięci, zadanie 5 oblicz.​

Answer 1

Odpowiedź:

Szczegółowe wyjaśnienie:

Zad 4

a)

2 2/7 + 3 4/7 = 16/7 + 25/7 = 42/7 = 6

4 4/9 + 6 7/9 = 10 i 11/9 = 11 i 2/9

b)

5 - 3/8 = 40/8 - 3/8 = 37/8 = 4 i 5/8

8 - 2 3/5 = 40/5 - 13/5 = 27/5 = 5 i 2/5

c)

3 3/4 - 1/2 = 3 i 3/4 - 2/4 = 3 i 1/4

5 3/4 + 3 1/2 = 5 i 3/4 + 3 i 2/4 = 8 i 5/4 = 9 i 1/4

Zad 5

a)

1 1/3 + 4/5 = 1 i 5/15 + 12/15 = 1 i 17/15 = 2 i 2/15

b)

2 5/7 + 1 3/8 = 2 i 40/56 + 1 i 21/56 = 3 i 61/56 = 4 i 5/56

c)

5/9 + 5/6 = 10/18 + 15/18 = 25/18 = 1 i 7/18

d)

2 3/10 + 3 3/4 = 2 i 6/20 + 3 i 15/20 = 5 i 21/20 = 6 i 1/20

e)

2 4/5 + 3/7 = 2 i 28/35 + 15/35 = 2 i 43/35 = 3 i 8/35

Answer 2

Zadanie 4:

a) 2 2/7 + 3 4/7 = 5 6/7

4 4/9 + 6 7/9 =  11 2/9

b) 5 - 3/8 = 4 5/8

8- 2 3/5 = 5 2/5

c) 3 3/4 - 1/2 = 3 1/4

5 3/4 + 3 1/2 = 9

Zadanie 5:

a) 2 2/15

b) 4 5/56

c) 1 7/18

d) 6 1/20

e) 3 8/35