Question

1 Zamień ułami na procenty

a) 0,7

b) 9/100

c)3/5

2 Zamień procenty na ułamki

a)25%

b)1,75 %

c)4 i ¾ %

3.Oblicz 20% lidzby 2 i ¼

Answer 1

1]

0,7×100=70%

9/100×100=900/100=9%

⅗×100=300/5=60%

2]

25%=0,25=¼

1,75%:100=0,0175=175/10 000=⁷/₄₀₀

4¾%=19/4:100==19/400

3]

20%×2¼=0,2×2,25=0,45

Answer 2

01-100%

0,7-x

x=70%

 

100-100%

9-x

x=9%

 

5-100%

3-x

x=60

_________________________________

1-100%

x-25%

x=1/4

 

1-100%

x-1,75%

x=0,0175

 

1-100%

x-4,75%

x=0,0475

___________________________

2,25-100%

x-25%

x=0,5625