Basic Math Examples

$8.15 \cdot 10^{- 3} - 8.4 \cdot 10^{- 5}$

Step 1

Move the decimal point in $- 8.4$ to the left by $2$ places and increase the power of $10^{- 5}$ by $2$ .

$8.15 \cdot 10^{- 3} - 0.084 \cdot 10^{- 3}$

Step 2

Factor $10^{- 3}$ out of $8.15 \cdot 10^{- 3} - 0.084 \cdot 10^{- 3}$ .

$(8.15 - 0.084) \cdot 10^{- 3}$

Step 3

Subtract $0.084$ from $8.15$ .

$8.066 \cdot 10^{- 3}$