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2 3/4 kg = 2,75 kg
2 1/8 kg = 2,125 kg
2 1/5 kg = 2,2 kg
Oblicz kwadrat liczby 2,5
2,5 * 2,5 = 6,25
zad.2
Połącz ze sobą równe masy
2 3/4 kg 2,2 kg
2 1/8 kg 2,125 kg
2 1/5 kg 2,75 kg
2 3/4 >>> 2,75 (3/4 = 0,75)
2 1/5 >>> 2,2 ( 2 1/5 = 2 2/10 = 2,2)
2 1/8 >>> 2,125 (1/8 = 0,125)