Convert to Scientific Notation 910^-5-310^-6

$9 \cdot 10^{- 5} - 3 \cdot 10^{- 6}$

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the $10$ . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

$8.7 \times 10^{- 5}$