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3×14 = 3× (10+4)
= (3×10) +4
= 30 + 4
= 34
Corrección:
3 x 14 = 3 x (10 + 4) = (3 x 10) + (3 x 4) = 30 + 12 = 42
Jorge:
3×14 = 3× (10 + 4)
= (3×10) + (3+4)
= 30+7
= 37
Corrección:
3 × 14 = 3 × (10 + 4) = (3 x 10) + (3 x 4) = 30 + 12 = 42
Miguel:
3 × 14 = 3 × (10 + 4)
= (3 × 10) + (3×4)
= 30+12
= 42
a) Miguel realizó bien el cálculo
b) Ricardo y Jorge no aplicaron bien la ley distributiva, lo que los condujo al error