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  • 1st Grade
  • Math
  • About 10 minutes

Think Addition

Subtraction is a missing addition fact! Count up to find it.

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Think AdditionName:Date:Subtraction is a missing addition fact! Count up to find it.9 − 4 = ? Think: 4 + ? = 9Start at 4 and count up to 9: 5, 6, 7, 8, 9. That is 5 more!So 9 − 4 = 5.7−3=Think:3+=74−1=Think:1+=49−5=Think:5+=95−4=Think:4+=54−2=Think:2+=48−7=Think:7+=82−1=Think:1+=27−1=Think:1+=7k5printables.com · Sheet #11324601 · Aligned with Common Core 1.OA.C.6

This is sheet #11324601.

How to do it

  1. Read the take-away problem.
  2. Start at the small number. Count up to the big one.
  3. How many did you count? That is the answer.

Teaching tip

Counting up is easier than counting back for most kids. Practice it out loud first. This sheet is aligned with Common Core 1.OA.C.6.

Think Addition worksheet for 1st grade (subtraction within 10), free printable
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About this worksheet

Each subtraction fact is paired with its missing-addend addition fact, so children can count up.

What kids practice

Subtraction is finding how many are left, or how far apart two numbers are. Within 10 means every number in the problem is 10 or less. These facts are the base for every later kind of subtraction, so it is worth getting them solid.

Watch for

  • Counting the starting number as the first hop when counting back, which gives an answer one too small.
  • Subtracting the smaller number from the larger one no matter which comes first.
  • Guessing instead of using a strategy. Ask "How could you check that with addition?"

It's free to print, with Fewer, Standard or More on the page and an answer key. See the full subtraction within 10 guide for 1st grade.

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