MENUTwo-Digit Addition and Subtraction Worksheet
The problems mix addition and subtraction, so look at the sign first. Type the answer in the box. A mark next to the box shows if your answer is right. Reload the page for 20 new problems.
How to add and subtract two-digit numbers
Write the numbers in a column: ones under ones, tens under tens. Work with the ones first, then the tens.
Addition: 47 + 36
$\begin{array}{r}47\\+\,36\\\hline 83\end{array}$
- Ones: $7 + 6 = 13$. Write 3 and carry 1 ten to the tens.
- Tens: $4 + 3 + 1 = 8$.
So $47 + 36 = 83$.
Subtraction: 64 − 29
$\begin{array}{r}64\\-\,29\\\hline 35\end{array}$
- $4$ is less than $9$, so take 1 ten from the 6 tens. Now you have 5 tens and 14 ones.
- Ones: $14 - 9 = 5$.
- Tens: $5 - 2 = 3$.
So $64 - 29 = 35$.
Check with the opposite operation: $83 - 36 = 47$ and $35 + 29 = 64$.
Only subtraction: Subtracting within 100 and Subtraction with Regrouping.
Math Crossword