Question

Q.18. Solve using distributive property
(a) $5\times 108$
(b) $15\times 12-5\times 12$

Answer 1

$$\begin{gathered} \left(\mathrm{a}\right). \\ 5\times 108 \\ =5\times \left(100+8\right) \\ =5\times 100+5\times 8 \\ =500+40 \\ =540 \\ \left(\mathrm{b}\right). \\ 15\times 12-5\times 12 \\ =12\times \left(15-5\right) \\ =12\times 10 \\ =120 \end{gathered}$$