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Grade 1 · Math · On Level

Free Missing Addends Within 20 worksheet - version 3

Find the missing part in addition equations through 20. This printable version includes 12 grade-appropriate questions and a separate answer sheet.

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Missing Addends Within 20

Grade 1 · On-level practice · 12 questions · Version PG-1NB6W7E-JDC3

Free printable
1.__ + 6 = 14
2.__ + 19 = 20
3.__ + 5 = 20
4.__ + 3 = 20
5.__ + 3 = 6
6.__ + 11 = 20
7.__ + 15 = 15
8.__ + 6 = 18
9.__ + 4 = 4
10.__ + 2 = 9
11.__ + 6 = 20
12.__ + 16 = 20
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Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 3
  1. __ + 6 = 148
  2. __ + 19 = 201
  3. __ + 5 = 2015
  4. __ + 3 = 2017
  5. __ + 3 = 63
  6. __ + 11 = 209
  7. __ + 15 = 150
  8. __ + 6 = 1812
  9. __ + 4 = 40
  10. __ + 2 = 97
  11. __ + 6 = 2014
  12. __ + 16 = 204

Worked example

__ + 6 = 14. Think 14 - 6, so the missing addend is 8.

Common mistake

Adding the known addend and total together.

Helpful hint

Subtract the known part from the total.