Página — Matematica 3 (pág. 63)

3. Resuelve aplicando la propiedad distributiva.

\begin{aligned}(a.2\cdot7&=\overbrace{\quad\quad\quad}^{})\cdot(\overbrace{\quad\quad\quad}^{})+\overbrace{\quad\quad\quad}^{})\\&=\overbrace{\quad\quad\quad}^{})\cdot\overbrace{\quad\quad\quad}^{})+\overbrace{\quad\quad\quad}^{})\cdot\overbrace{\quad\quad}^{})\\&=\overbrace{\quad\quad\quad}^{})+\overbrace{\quad\quad}^{})\\&=\overbrace{\quad\quad\quad}^{})\end{aligned}

\begin{aligned}\bullet\bullet9&=\overbrace{\quad\quad\quad}^{}\bullet(\overbrace{\quad\quad\quad}^{}\bullet\overbrace{\quad\quad\quad}^{})+\overbrace{\quad\quad\quad}^{})\\&=\overbrace{\quad\quad\quad}^{}\bullet\overbrace{\quad\quad\quad}^{}+\overbrace{\quad\quad\quad}^{}\bullet\overbrace{\quad\quad\quad}^{})\\&=\overbrace{\quad\quad\quad}^{}+\overbrace{\quad\quad\quad}^{})\\&=\overbrace{\quad\quad\quad}^{}\bullet\overbrace{\quad\quad}^{}\end{aligned}

4. Analiza cada expresión y encierra el error. Luego, corrígelo realizando el procedimiento correcto.

\begin{array}{c}6\cdot9\\\left(6\cdot4\right)+\left(6\cdot4\right)\\24\quad+\quad24\\48\\\end{array}

\begin{array}{c}10.\quad5\cdot10\\(5\cdot2)+(5\cdot8)\\10\quad+\quad13\\23\end{array}

Unidad 2

Tema 2· Multiplicación

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