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

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

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

Answer»

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