Página — Sumo 3 (pág. 168)

Unidad 2 - Operaciones y algebra

iCual de los procedimientos es correcto al calcular 48 – 13 usando una estrategia por descomposición del sustraendo?

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Luego 47\div3=50

Las edades de Gerardo y Gabriela suman 24 años. Si Gerardo tiene 15 años, una ecuación que ayudará a saber la edad de Gabriela es:

\begin{array}{ll}A.&24+\bigtriangleup=15\\B.&15+24=\bigtriangleup\\C.&\bigtriangleup-15=24\\D.&\bigtriangleup+15=24\end{array}

166 Ciento sesenta y seis