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Выполни умножение по алгоритму. 430 ⋅ 2 = (400 + 30) ⋅ 2= 400 ⋅ 2 +30 ⋅ 2 = 860340 ⋅ 2 = ( + ) ⋅ 2 = 300 · + 40 ⋅ = 250 ⋅ 3 = ( + ) ⋅ 3 = 200 · + 50 ⋅ = 440 ⋅ 2 = ( + ) ⋅ 2 = 400 · + 40 ⋅ =
Ответы
340×2=(300+40)×2=300×2+40×2=680
250×3=(200+50)×3=200×3+50×3=750
440×2=(400+40)×2=400×2+40×2=840