Add 2-digit numbers in your head Worksheet
A printable mental math worksheet for the trick "add 2-digit numbers in your head". Add the tens first, then the ones. No carrying on paper. 30 problems with an answer key.
30 problems · answer key on page 2 · free, no login
What is on the sheet
Use the trick: Add the tens first, then the ones. No carrying on paper. Write only the answer. The answer key is on page 2.
- 1. 44 + 41 = ___
- 2. 64 + 21 = ___
- 3. 26 + 26 = ___
- 4. 70 + 16 = ___
- 5. 57 + 20 = ___
- 6. 49 + 26 = ___
- 7. 45 + 12 = ___
- 8. 44 + 35 = ___
- 9. 71 + 25 = ___
- 10. 78 + 15 = ___
- 11. 27 + 21 = ___
- 12. 63 + 28 = ___
The first 12 of 30 problems.
How to use it
- Print one copy per day and set a timer for 1 minute.
- Write the score at the top and try to beat it the next day.
- Check with the answer key and practise the ones that were wrong.