Evaluate 81*2

Multiply ${\displaystyle 2}$ by ${\displaystyle 1}$. Place the result in the next column in the result line. There is one result line for each digit in ${\displaystyle 2}$.

Multiply ${\displaystyle 2}$ by ${\displaystyle 8}$. Place the ones digit ${\displaystyle \left(6\right)}$ in the result line and carry the tens digit ${\displaystyle \left(1\right)}$. There is one result line for each digit in ${\displaystyle 2}$.

Add the numbers in each column. In this case, add ${\displaystyle 2}$, then place the ${\displaystyle 2}$ in the result line.

Add the numbers in each column. In this case, add ${\displaystyle 6}$, then place the ${\displaystyle 6}$ in the result line.

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