Question

Which of the following is the most suitable expansion for 42 x 8?

• A. 8 x (40 + 2)
• B. 8 x ( 44 - 2)
• C. 42 ( 5 + 3 )
• D. 8 x 40 x 2

Answer 1

The correct option is A 8 x (40 + 2)

Here, 42 is the bigger and complex number.
So we need to split it in such a way that the calculation becomes easy by applying distributive property.
so we get 8 x (40 + 2)