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Classroom · Math · 1st and 2nd grade
Two-digit addition without regrouping worksheets
A free five-page pack: the method with a worked example, problems in a tens and ones grid, columns with a check, across and missing numbers, a spot-the-mistake puzzle, word problems and an answer key.
Watch it solved
49 sec · with voice and captionsA pencil works one example of each activity, so you can see how the worksheet goes before you print it. Tap a step to jump to it. The rest of the sheet is left for your child to finish.
Read what the video says
- 0:00 Let's practice two-digit addition without regrouping, step by step.
- 0:05 Line up the tens and the ones, and always start with the ones.
- 0:09 66 plus 33. Add the ones first, 6 plus 3 is 9. Then add the tens. The answer is 99.
- 0:18 Solve in columns, ones first. 75 plus 11 is 86.
- 0:24 Spot the mistake. Adam says 23 plus 26 is 49. Yes, Adam is right.
- 0:31 Adam has 32 toy cars. Adam gets 33 more. How many toy cars does Adam have now? 32 plus 33 is 65.
- 0:42 Great job! Now print the free worksheet, and finish the rest on your own.
How to do it
How to do itLine up the tens and the ones. Add the ones first: 4 + 5 = 9. Then add the tens: 3 + 2 = 5. So 34 + 25 = 59.
Teaching tip
Teaching tipSay each number as tens and ones: 34 is 3 tens and 4 ones. Adding tens works just like adding ones: 3 tens + 2 tens = 5 tens.
Try some
72 + 21 = ?93
30 + 53 = ?83
41 + 38 = ?79
13 + 44 = ?57
61 + 10 = ?71
12 + 33 = ?45
33 + 11 = ?44
21 + 23 = ?44
Tap a problem to see the answer.
Word problems
Adam has 32 toy cars. Adam gets 33 more. How many toy cars does Adam have now?Show answer
32 + 33 = 65
There are 24 birds in the park. Then 72 more come. How many birds are there now?Show answer
24 + 72 = 96
Leo has 16 crayons. Hana has 50 crayons. How many crayons do they have in all?Show answer
16 + 50 = 66
There are 13 bees in the garden. Then 86 more come. How many bees are there now?Show answer
13 + 86 = 99
What the worksheets look like
Common questions
How do you teach two-digit addition without regrouping?
Line up the tens and the ones. Add the ones first: 4 + 5 = 9. Then add the tens: 3 + 2 = 5. So 34 + 25 = 59. Say each number as tens and ones: 34 is 3 tens and 4 ones. Adding tens works just like adding ones: 3 tens + 2 tens = 5 tens.
What grade is two-digit addition without regrouping?
Usually 1st and 2nd grade. In the Common Core it is part of 1.NBT.C.4, 2.NBT.B.5.
Is there an answer key?
Yes. Page 5 has every answer from the pack and a short teaching tip. The worksheet maker also adds an answer key to every sheet it makes.
With or without regrouping first?
Without. Children first learn to line up tens and ones and work ones first. Regrouping (carrying or borrowing a ten) comes next, usually in 2nd grade.
