Mathematics, 10.03.2021 17:50 mooncake9090
Para calcular mentalmente 35 x 12 y 45 x 18. Ana descompone el 12 y el 18 y distribuye. 35 x 12= 35 x (10+2) = 35 x 10 + 2 x 35 = 420 45 x 18 = 45 x (20-2) = 45 x 10 - 45 x 2 =810 Usa un método similar para calcular los productos siguientes: 1.504 x 20= 189x9= de paso expliquen q no entendi un pepino jajs xfavor y gracias xde
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Para calcular mentalmente 35 x 12 y 45 x 18. Ana descompone el 12 y el 18 y distribuye. 35 x 12= 35...
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