Question

Given that 4 x 108 = 40 × 107

Work out (4 × 108) + (3 × 107)
Give your answer in standard form.

Answer 1

4.3 x 10⁸

Explanation:

(4 x 10⁸) + (3 x 10⁷) = 40 x 10⁷ + 3 x 10⁷

= (40 + 3) x 10⁷

= 43 x 10⁷

= 4.3 x 10⁸ (standard form)