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Grade 3 Addition — Stretch your thinking

Addition combines quantities to find a total. Try the more demanding numbers. Estimate first, then explain your method and verify.

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Grade 3 Addition — Stretch your thinking

Name: ________________________   Date: ______________

20 questions

Directions: Start with the larger addend and count on, or group numbers by place value. Write your answer for each problem.

  1. 780 + 536 = ______
  2. 86 + 14 = ______
  3. 756 + 111 = ______
  4. 1,291 + 198 = ______
  5. 1,170 + 197 = ______
  6. 463 + 623 = ______
  7. 995 + 559 = ______
  8. 1,158 + 498 = ______
  9. 1,039 + 50 = ______
  10. 134 + 576 = ______
  11. 1,048 + 10 = ______
  12. 1,282 + 45 = ______
  13. 153 + 570 = ______
  14. 260 + 351 = ______
  15. 997 + 142 = ______
  16. 855 + 383 = ______
  17. 666 + 156 = ______
  18. 918 + 210 = ______
  19. 99 + 283 = ______
  20. 1,145 + 418 = ______

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Show answer key (for parents and teachers)
  1. 1. 1,316
  2. 2. 100
  3. 3. 867
  4. 4. 1,489
  5. 5. 1,367
  6. 6. 1,086
  7. 7. 1,554
  8. 8. 1,656
  9. 9. 1,089
  10. 10. 710
  11. 11. 1,058
  12. 12. 1,327
  13. 13. 723
  14. 14. 611
  15. 15. 1,139
  16. 16. 1,238
  17. 17. 822
  18. 18. 1,128
  19. 19. 382
  20. 20. 1,563

How to help with this skill

Third graders begin to use multiplication, division, fractions and measurement regularly. Discuss which operation fits the question.

  • Start with the larger addend and count on, or group numbers by place value.
  • Line up tens, hundreds, and ones when adding multi-digit numbers.
  • Check by subtracting one addend from the total.

Try this: Ask: Which two amounts are being combined? Draw a quick model if needed.

Choose a different level

Gentle practiceEveryday practiceStretch your thinking

More Grade 3 practice

SubtractionMultiplicationDivisionMixed operationsMissing numbers

Supplementary math practice, not a full curriculum. Review answers with your learner.