Alexandra are 30 de creioane pe care le aseaza in 9 cutii.Ea pune cate 3 sau cate 4 intr-o cutie.Cate cutii de cate 3 creioane are? Cate cutii de cate 4 creioane are?

Calculeaza in scris.

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Răspuns :

3x9=27 cutii de 3 creioane  (răman 3 creioane)