Question

zad.1

Zamień na procenty:

a) 2/5, 9/10, 13/20, 19/25, 41/50, 4/7, 2/9,

b) 0,15; 0,6; 1,10; 1,09; 2,55.

zad.2

Zamień na ułamki:

85%; 27%; 125%; 31 3/4%; 33 1/3%.

zad.3

Oblicz:

a) 12% liczby 400;

b) 24% liczby 57,2;

c) 5 3/4% liczby 494;

d) 66 2/3 liczby 18,5:

Answer 1

zad.1

a) 40%, 90%, 65%, 76%, 82%, ok.57%, ok.22%

b)15%, 60%, 110%, 109%, 255%

 

zad.2 

85% = 0,85

27% = 0,27

125% = 1,25

31 3/4% = 31,75% = 0,3175

33 1/3% = 1/3

 

zad.3

a)12% z 400 = 12/100 * 400 = 48

b)24% z 57,2 = 24/100 * 572/10 = 1716/125 = 13,728

c)5 3/4 % z 494 = 575/100 * 494 = i tak dalej

Answer 2

zad.1
Zamień na procenty:

a) 2/5, = 40%

9/10 = 90%

13/20 = 65%

19/25 = 76%

41/50 = 82%

4/7 = 57%

2/9 = 22%

b) 0,15 = 15%

0,6 = 60%

1,10 = 110%

1,09 = 109%

2,55 = 255 %

zad.2
Zamień na ułamki:

85% 85/100 = 17/20

27% = 27/100

125% = 125/100 = 5/4

31 3/4% = 127/4

33 1/3% =  1/3

zad.3
Oblicz:

a) 12% liczby 400;
12% * 400 = 12/100 * 400 = 48
b) 24% liczby 57,2;
24% * 57,2 = 24/100 * 57,2  = 13,728
c) 5 3/4% liczby

494 = 5,75% * 494 = 0,0575 * 494 = 28,405
d) 66 2/3 liczby 18,5
66 2/3% * 18,5 = 37