zad. 1
1km = 1000m
50% z 1000m = (50*1000):100 = 50*10 = 500m
25% z 1000m = (25*1000):100 = 25*10 = 250m
10% z 1000m = (10*1000):100 = 10*10 = 100m
1% z 1000m = (1*1000):100 = 1*10 = 10m
50% z 800ml = (50*800):100 = 50*8 = 400ml
25% z 800ml = (25*800):100 = 25*8 = 200ml
10% z 800ml = (10*800):100 = 10*8 = 80ml
1% z 800ml = (1*800):100 = 1*8 = 8ml
zad. 2
36zł
150% z 36zł = (150*36):100 = 5400:100 = 54zł
200% z 36zł = (200*36):100 = 2*36 = 72zł
110% z 36zł = (110*36):100 = 3960:100 = 39,6zł
125% z 36zł = (125*36):100 = 4500:100 = 45zł