Skip to content
KidosLab

Grade 3 Missing Addend Worksheets

Find the number that finishes an addition, like 6 + __ = 13.

Every sheet below is generated fresh with a matching answer key. Pick one of the three levels, preview it, and print or download the PDF — no account, no watermark. For the other grade 3 missing numbers skills, see all missing numbers worksheets.

Build your worksheet

Missing Numbers · Grade 3

Grade
Topic
SkillEach skill is a different kind of question, with its own levels.
Level
Questions
20

The link is the save: it reopens this exact worksheet — same questions, same settings. Bookmark it or send it on. No account needed.

Live preview

Grade 3 · 2 pages · A4

Missing Numbers Practice

Grade 3 • Missing Addend • With regrouping
Name:Date:

Write the missing number in each sum.

  1. 1) ___ + 48 = 262
  2. 2) ___ + 25 = 761
  1. 3) ___ + 289 = 450
  2. 4) ___ + 14 = 323
  1. 5) ___ + 47 = 360
  2. 6) ___ + 117 = 623
  1. 7) ___ + 138 = 337
  2. 8) ___ + 569 = 661
  1. 9) ___ + 208 = 264
  2. 10) ___ + 539 = 670
  1. 11) ___ + 677 = 815
  2. 12) ___ + 149 = 970
  1. 13) ___ + 897 = 943
  2. 14) ___ + 253 = 761
  1. 15) ___ + 85 = 132
  2. 16) ___ + 476 = 734
  1. 17) ___ + 243 = 742
  2. 18) ___ + 159 = 180
  1. 19) ___ + 89 = 171
  2. 20) ___ + 69 = 143
Finished already?Get more worksheets for free at www.kidoslab.com
Page 1 of 2

Answer Key

  1. 1. 214
  2. 2. 736
  3. 3. 161
  4. 4. 309
  1. 5. 313
  2. 6. 506
  3. 7. 199
  4. 8. 92
  1. 9. 56
  2. 10. 131
  3. 11. 138
  4. 12. 821
  1. 13. 46
  2. 14. 508
  3. 15. 47
  4. 16. 258
  1. 17. 499
  2. 18. 21
  3. 19. 82
  4. 20. 74
Finished already?Get more worksheets for free at www.kidoslab.com
Page 2 of 2

What each level generates

Grade 3 missing addend — the exact skill behind each difficulty setting, straight from the generator.

  1. Level 1No regrouping
  2. Level 2With regrouping
  3. Level 3Three numbers

Grade levels follow the progression common to most English-language curricula — not one specific national curriculum. Every level shows exactly what it generates, so you can check the fit with your own program. See the full scope & sequence →

More Grade 3 missing numbers skills

Each one generates a different kind of question, with its own three levels and answer key.

Frequently asked questions

▸What do missing factor problems teach in Grade 3?

Division, in disguise. 4 × ___ = 28 is the same question as 28 ÷ 4, and most curricula introduce division exactly this way — so missing-factor fluency converts directly into division fluency.

▸When should a child handle missing dividends like ___ ÷ 6 = 7?

Typically in the second half of Grade 3, after missing factors feel comfortable. A missing dividend requires multiplying back (6 × 7), which is a step more abstract than finding a factor.

▸How many problems should a Grade 3 missing number sheet have?

10–12 for missing factors and dividends. Each blank takes real reasoning, unlike straight fact drill, so a shorter accurate set beats a long rushed one. Adjust with the stepper.

▸Is there a larger, easier-to-read print option?

Yes — switch on the easy-read font in the controls. It uses simpler letterforms and more spacing, which helps students who lose their place or reverse symbols on dense pages.

▸Can my whole class do the identical worksheet?

Yes. Share the link and every student gets the exact same problems; the answer key prints on its own separate page, so you can distribute the sheets without handing out the answers.