Question

Solve the following problem:

Perform the following operation:

1.05 × 10⁻⁴ − 9.7 × 10⁻⁵

Answer 1

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

1.05 × 10⁻⁴ − 9.7 × 10⁻⁵

= 10.5 × 10⁻⁵ − 9.7 × 10⁻⁵

= (10.5 − 9.7) × 10⁻⁵

= 0.80 × 10⁻⁵

= 8.0 × 10⁻⁶