For class, tutoring, or a quick practice at home

Three-addend addition worksheets

Each question adds three numbers in a row, which trains holding a partial sum in mind while continuing to add.

Free to use · no sign-up · print or save as PDF · separate answer key

20Questionspreset · print · share
Mixed worksheet modules

Select one or more modules and set the question count for each. Leave all unchecked to use the page topic.

Advanced arithmetic settings
Operators
Print fields and style
View worksheet

For a clean printout, turn off “Headers and footers” in the print dialog. One-click PDF never includes the date, page title, or web address.

This worksheet is made on your device. We do not ask for student details.

Three-addend addition worksheets
Name: ____________________Date: ____________________
1.3 + 3 + 6 =
2.3 + 5 + 3 =
3.5 + 6 + 3 =
4.3 + 5 + 5 =
5.3 + 9 + 10 =
6.9 + 2 + 10 =
7.9 + 3 + 5 =
8.2 + 10 + 8 =
9.5 + 9 + 6 =
10.6 + 2 + 3 =
11.7 + 9 + 3 =
12.4 + 4 + 8 =
13.7 + 4 + 6 =
14.9 + 5 + 3 =
15.5 + 8 + 7 =
16.3 + 9 + 9 =
17.2 + 9 + 7 =
18.4 + 10 + 10 =
19.2 + 5 + 10 =
20.9 + 5 + 8 =
Answer key
1. 12
2. 11
3. 14
4. 13
5. 22
6. 21
7. 17
8. 20
9. 20
10. 11
11. 19
12. 16
13. 17
14. 17
15. 20
16. 21
17. 18
18. 24
19. 17
20. 22
Advertisement
02

What this worksheet includes

Each question adds three numbers in a row, which trains holding a partial sum in mind while continuing to add.

  • 20 questions by default
  • Each question has three addends
  • At the easy level each addend is from 1 to 10
  • Sums at the easy level stay at or below 30

Choosing a practice session

  • Practising make-ten strategies
  • Extending two-addend fluency
  • Mental math warm-ups

Content reviewGeneration rules and examples reviewed 29 September 2026. Found a problem? Send a correction

03

Need to change the range?

The full maker lets you change the range, difficulty, amount of working space, and other print settings.

Set up a addition sheet →

Before or after this skill

Addition within 20 worksheetsGenerate 20 printable addition questions using addends from 1 to 10, with a separate answer key.Addition within 100 worksheetsCreate printable addition practice with addends from 5 to 50 and sums no greater than 100.Two-digit addition worksheetsGenerate 20 printable two-digit addition questions with regrouping practice and a separate answer key.
Advertisement