Question

PROSZĘ O SZYBKĄ ODPOWIEDŹ!

zad 1. : Oblicz podany procent każdej z liczb zapisanych obok: (25%) liczby : 8, 36, 120, (1,6) , 1600 (150%) 10,8,50,2000,120 (0,1%) 2700,500,200,1300

zad 2. : OBLICZ 15% z 28zł 140% z 8kg 1,2% z 20 zł 13% z 25 cm 4,5% z 480 l 270% z 2,5 km 3%o z 1500 kg 7%o z 20 tyś. zł 1,5%o z 4 t

Answer 1

ZAD 1

25/100 * 8 = 2

25/100 * 36 = 9

25/100 * 120 = 30

25/100 * 1,6 = 0,4

25/100 * 1600 = 400

 

150/100 * 10 = 15

150/100 * 8 = 12

150/100 * 50 = 75

150/100 * 2000 = 3000

150/100 * 120 = 180

 

1/1000 * 2700 = 2,7

1/1000 * 500 = 0,5

1/1000 * 200 = 0,2

1/1000 * 1300 = 1,3

 

ZAD 2

15/100  * 28 = 4,2zł

140/100 * 8 = 11,2kg

12/1000 * 20 = 0,24zł

13/100 * 25 = 3,25cm

45/1000 * 480 = 21,6l

270/100 * 2,5 = 6,75km

Podałem jak robiłem, promile obliczysz sama?

 

Answer 2

(25%) = 25/100 = 1/4

8 * 1/4 = 2

36 * 1/4 = 9

120 * 1/4 = 30

(1,6) * 1/4 = 16/10 * 1/4 = 4/10 = 0,4

1600 * 1/4 = 400

(150%) = 150/100 = 3/2

10 * 3/2 = 5 * 3 = 15

8 * 3/2 = 4 * 3= 12

50 * 3/2 = 25 * 3 = 75

2000 * 3/2 = 1000 * 3 = 3000

120 * 3/2 = 60 * 3 = 180

(0,1%) = 1/1000

2700 * 1/1000 = 27/10 = 2,7

500  * 1/1000 = 1/2 =0,5

200 * 1/1000 = 1/5 = 0,2

1300 * 1/1000 = 13 * 1/10 = 13/10 = 1,3

 

15% z 28zł = 15/100 * 28 zł = 3/20 * 28zł = 3/10 * 14 zł = 42/10 = 4,2zł

140% z 8kg= 140/100 * 8kg = 14/10 * 8kg = 112/10 = 11,2 kg

1,2% z 20 zł = 12/1000 * 20zł = 12/50 = 0,24zł

13% z 25 cm= 13/100 * 25cm = 13/4 = 3,25 cm

4,5% z 480 l = 45/1000 *480l = 45/100 * 48 = 2160/100 = 21,6 l

270% z 2,5 km= 270/100 * 25/10 = 27/4 = 6,75 km

3%o z 1500 kg= 3/1000 * 1500 kg = 3/10 *15 = 45/10 = 4,5 kg

7%o z 20 tyś.zł= 7/1000 * 20 000zł = 7 * 20 = 140 zł

1,5%o z 4 t = 15/10000 * 4t = 15/2500 = 0,006 t