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a fost răspuns

calculeaza in doua moduri , prin asociare:a) (2×2)×3= b) (5×2)×3= 2×

Răspuns :

Romy03
a) (2x2)x3= 4x3=12 sau (2x3)x2=6x2=12; b) (5x2)x3=10x3=30 sau (5x3)×2=15x2=30;
RazvyKing
(2×2)×3=4×3=12 (2×2)×3=2×3+2×3=6+6=12 (5×2)×3×2=10×3×2=30×2=60 (5×2)×3×2=5×3+2×3+5×2+2×2=15+6+10+4=34

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