Evaluate 9*25

Multiply ${\displaystyle 5}$ by ${\displaystyle 9}$. Place the ones digit ${\displaystyle \left(5\right)}$ in the result line and carry the tens digit ${\displaystyle \left(4\right)}$. There is one result line for each digit in ${\displaystyle 25}$.

Multiply ${\displaystyle 2}$ by ${\displaystyle 9}$. Place the ones digit ${\displaystyle \left(8\right)}$ in the result line and carry the tens digit ${\displaystyle \left(1\right)}$. There is one result line for each digit in ${\displaystyle 25}$.

Add the numbers in each column. In this case, add ${\displaystyle 5+0}$, then place the ${\displaystyle 5}$ in the result line.

Add the numbers in each column. In this case, add ${\displaystyle 4+8}$, then place the ${\displaystyle 2}$ in the result line and carry the ${\displaystyle 1}$.

Add the numbers in each column. In this case, add ${\displaystyle 0+1+1}$, then place the ${\displaystyle 2}$ in the result line.