Pre-Algebra Examples

$121 - 9$

Step 1

Subtract using long subtraction.

Tap for more steps...

Step 1.1

Set up the subtraction problem in long subtraction format.

Step 1.2

Borrow $10$ from the digit in the next column to the left. Add the borrowed $10$ to $1$ . Reduce the number that was borrowed from by $1$ .

Step 1.3

Subtract $9$ from $11$ .

Step 1.4

Subtract $0$ from $1$ .

Step 1.5

Subtract $0$ from $1$ .

Step 2

The result of $121 - 9$ is $112$ .

$112$