Explain how to make the following product easy to calculate mentally (there are five 2s and five 5s in the product):
Added by -Ngeles H.
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To make the product of five 2s and five 5s easy to calculate mentally, we can follow these steps: Show more…
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Find each product mentally. Example $$\begin{aligned}15 \cdot 12 &=15(10+2) \\&=150+30 \text { or } 180\end{aligned}$$. $$8 \cdot 23$$
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Find each product mentally. Example $$\begin{aligned}15 \cdot 12 &=15(10+2) \\&=150+30 \text { or } 180\end{aligned}$$. $$16 \cdot 11$$
Find each product mentally. Example $$\begin{aligned}15 \cdot 12 &=15(10+2) \\&=150+30 \text { or } 180\end{aligned}$$. $$9 \cdot 32$$
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