Grade 1 - Math

Grade 1 Relate Addition and Subtraction Worksheet

6 printable versions - Challenge Me - About 8 minutes each

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Relate Addition and Subtraction

Grade 1 - Math - Challenge Me

Worksheet 1

  1. 2 + ____ = 10. Which subtraction fact finds the missing addend?

    A part-part-whole bar model.A bar model. The top bar is the whole and the bars below it are the 2 parts. Empty boxes mark the values to be found.102

  2. Use a related fact to solve ____ + 6 = 12.

  3. Which addition fact checks 15 - 11 = 4?

  4. 19 - ____ = 8. What missing part belongs in the equation?

  5. A whole is 18. One part is 14. What is the other part?

    A part-part-whole bar model.A bar model. The top bar is the whole and the bars below it are the 2 parts. Empty boxes mark the values to be found.1814

  6. 2 + ____ = 12. Which subtraction fact finds the missing addend?

    A part-part-whole bar model.A bar model. The top bar is the whole and the bars below it are the 2 parts. Empty boxes mark the values to be found.122

  7. Use a related fact to solve ____ + 5 = 14.

  8. Which addition fact checks 11 - 6 = 5?

  9. 8 - ____ = 5. What missing part belongs in the equation?

  10. A whole is 17. One part is 12. What is the other part?

    A part-part-whole bar model.A bar model. The top bar is the whole and the bars below it are the 2 parts. Empty boxes mark the values to be found.1712
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About this worksheet

Addition and subtraction are inverse operations, but young learners often treat them as separate lists of facts. First grade standards ask children to use that relationship to find unknown addends and understand subtraction as a missing-part problem. This worksheet repeatedly shows a whole and two parts, then asks which addition or subtraction fact can solve the unknown. The numbers stay small enough for accurate reasoning, while the arrangement changes so children do not rely on one template. Some items begin with a subtraction fact and ask for the addition fact that proves it; others begin with an addition equation and ask which subtraction removes one part. Support pages use totals to ten. Standard and challenge pages extend into teen totals. Ask children to say the whole first and then name the two parts.

What your child will learn

  • Use subtraction to find an unknown addend
  • Match related addition and subtraction facts
  • Identify the whole and parts
  • Check a subtraction answer with addition

Worked example

If 7 + 5 = 12, then 12 - 7 = 5. The whole is 12 and the parts are 7 and 5.

Common mistake

Adding the whole and one part together instead of finding the missing part.

Helpful hint

Find the whole first, then ask which part is missing.

Fact Families and Make TenTrue and False Equations

Questions parents ask

What is the most common mistake with relate addition and subtraction?
Adding the whole and one part together instead of finding the missing part.
How can I help my child with relate addition and subtraction?
Find the whole first, then ask which part is missing.
Are these 1st grade math worksheets free to print?
Yes. All 6 printable versions on this page are free to download and print, with no account needed.

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