Question

Add 5.55 × 10⁴ and 6.95 × 10³ and express the result in scientific notation.

Answer 1

To perform addition operation, first the numbers are written in such a way that they have the same exponent. The coefficients are then added.

(5.55 × 10⁴) + (6.95 × 10³)

= (5.55 × 10⁴) + (0.695 × 10⁴) 

= (5.55 +0.695) × 10⁴ 

= 6.245 × 10⁴