https://es-cl.khanacademy.org/math/cc-third-grade-math/3rd-basic-multiplication/multiply-by-2-or-4/e/multiply-by-2-and-4 2026-04-08T11:44:38.14476496Z Multiplicar por 2 y 4 Multiplicar por 2 o 4 veces un número menor o igual a 10. Lindsay exercise