Pre-Algebra Examples

Factor out a ${\displaystyle -1}$.

Multiply ${\displaystyle 8}$ by ${\displaystyle 3}$. Place the ones digit ${\displaystyle \left(4\right)}$ in the result line and carry the tens digit ${\displaystyle \left(2\right)}$. There is one result line for each digit in ${\displaystyle 0.08}$.

Multiply ${\displaystyle 8}$ by ${\displaystyle 9}$ and add the carried ${\displaystyle 2}$. Place the ones digit ${\displaystyle \left(4\right)}$ in the result line and carry the tens digit ${\displaystyle \left(7\right)}$. There is one result line for each digit in the ${\displaystyle 0.08}$.

Multiply ${\displaystyle 8}$ by ${\displaystyle 3}$ and add the carried ${\displaystyle 7}$. Place the ones digit ${\displaystyle \left(1\right)}$ in the result line and carry the tens digit ${\displaystyle \left(3\right)}$. There is one result line for each digit in the ${\displaystyle 0.08}$.

Multiply ${\displaystyle 0}$ by ${\displaystyle 3}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 0.08}$.

Multiply ${\displaystyle 0}$ by ${\displaystyle 9}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 0.08}$.

Multiply ${\displaystyle 0}$ by ${\displaystyle 3}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 0.08}$.

Multiply ${\displaystyle 0}$ by ${\displaystyle 3}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 0.08}$.

Multiply ${\displaystyle 0}$ by ${\displaystyle 9}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 0.08}$.

Multiply ${\displaystyle 0}$ by ${\displaystyle 3}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 0.08}$.

Add the numbers in each column. In this case, add ${\displaystyle 4+0+0}$, then place the ${\displaystyle 4}$ in the result line.

Add the numbers in each column. In this case, add ${\displaystyle 4+0+0}$, then place the ${\displaystyle 4}$ in the result line.

Add the numbers in each column. In this case, add ${\displaystyle 1+0+0}$, then place the ${\displaystyle 1}$ in the result line.

Add the numbers in each column. In this case, add ${\displaystyle 3+0+0}$, then place the ${\displaystyle 3}$ in the result line.

To find the number of decimal places needed in the answer, add the number of decimal places in the multiplier and multiplicand. In this case, there is a total of ${\displaystyle 3}$, so the answer must have ${\displaystyle 3}$ decimal places as well.