Evaluate Using Scientific Notation (9.310^-3)-(6.910^-4)

$(9.3 \cdot 10^{- 3}) - (6.9 \cdot 10^{- 4})$

Step 1

Multiply $- 1$ by $6.9$ .

$9.3 \cdot 10^{- 3} - 6.9 \cdot 10^{- 4}$

Step 2

Move the decimal point in $- 6.9$ to the left by $1$ place and increase the power of $10^{- 4}$ by $1$ .

$9.3 \cdot 10^{- 3} - 0.69 \cdot 10^{- 3}$

Step 3

Factor $10^{- 3}$ out of $9.3 \cdot 10^{- 3} - 0.69 \cdot 10^{- 3}$ .

$(9.3 - 0.69) \cdot 10^{- 3}$

Step 4

Subtract $0.69$ from $9.3$ .

$8.61 \cdot 10^{- 3}$

Evaluate Using Scientific Notation (9.3*10^-3)-(6.9*10^-4)