2 Digit Addition Without Regrouping
In every problem on this sheet, each column adds to 9 or less, so students can learn the column method without carrying. It has 20 stacked problems and takes about 12 minutes.
- Grade
- Grade 1–2
- Problems
- 20
- Time
- About 12 minutes
- Standard
- 2.NBT.B.5
Download
Download PDF (US Letter) Download PDF (A4)Two pages: the worksheet, then the answer key. No sign-up needed.
Part A Add. Start with the ones column.
- 13+ 1124
- 23+ 2245
- 86+ 1399
- 16+ 2238
- 21+ 5778
- 12+ 1527
- 43+ 3578
- 37+ 3269
- 43+ 2669
- 32+ 4678
- 63+ 3497
- 43+ 5497
Part B Add. Check each answer by estimating.
- 12+ 8799
- 16+ 1228
- 24+ 5478
- 71+ 1889
- 32+ 1749
- 51+ 1364
- 25+ 2146
- 42+ 1557
Tips for teachers and parents
- Always add the ones first, then the tens. The habit matters more now than it seems, because regrouping depends on it.
- Say the tens as tens: in 34 + 25, "3 tens and 2 tens make 5 tens."
- Use base-ten blocks for the first few problems. Students see the ones and tens join in separate piles.
- Check with a quick estimate: 34 + 25 is about 30 + 30 = 60.
Common mistakes
- Adding all four digits together, so 23 + 45 becomes 14. Show the two columns with a line between them.
- Starting in the tens column. It works on this sheet but causes errors later; ask for ones first every time.
What to practice next
Move on to 2-digit addition with regrouping, where the ones column adds to 10 or more.
Frequently asked questions
What does without regrouping mean?
No column adds to 10 or more, so nothing is carried. 42 + 35 = 77 is an example.
What grade learns 2 digit addition?
Grade 2 adds within 100 using place value, and many grade 1 classes start with problems like these.
Is the answer key included?
Yes, on page 2 of the PDF.