Rozwiązane

1. Oblicz:
A) 1 2/3+3/4=
B) 1 3/5-3/10=
C) 1 2/7×3 1/3=
D) 5 1/5:1 6/7=


2. Oblicz:
A) 1,5+2 1/3=
B) 4 1/5-2,7=
C) 1 3/4:0,2=
D) 1 3/4:0,2=
Na teraz pliss!! ​



Odpowiedź :

Momosisko

Odpowiedź:

1. a)1 2/3 = 5/3

5/3+3/4 = 29/12 = 2 5/12

b) 1 3/5 = 8/5

8/5 - 3/10 = 13/10 = 1 3/10

c) 1 2/7 = 9/7

3 1/3 = 10/3

9/7 * 10/3 = 90/21 = 30/7 = 4 2/7

d) 5 1/5 = 26/5

1 6/7 = 13/7

26/5:13/7=26/5 * 7/13 = 182/65 = 14/5 = 2 4/5

2. a) 1,5 = 1 5/10 = 15/10 = 3/2

2 1/3 = 7/3

3/2+7/3 = 9+14/6 = 23/6 = 3 5/6

b)4 1/5 = 21/5

2,7 = 2 7/10 = 27/10

21/5 - 27/10 = 42-27/10 = 15/10 = 3/2 = 1 1/2

c) 1 3/4 = 7/4

0,2 = 2/10

7/4:2/10=7/4*10/2 = 70/8 = 35/4 = 8 3/4

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