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Mirel cumpara intr-o zi 3 kg de rosii,iar in alta cu 1/2 kg mai putin.Cate kg de rosii a cumparat in cele doua zile?

Răspuns :

1 kg=1000g
1/2 kg = 1000g:2=500 g
3kg=3x1000=3000g
3000 g-500g=2500g  (2,5 kg ) a cumparat a doua zi
3kg+2,5kg=5,5 kg a cumparat in cele doua zile