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  • 1st Grade
  • Math
  • About 10 minutes
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Subtraction to 20 Chart

For bigger numbers, go back to 10 first, or count up.

Need more than one? Tap + for extra copies (up to 10).

Subtraction to 20 ChartName:Date:For bigger numbers, go back to 10 first, or count up.Take back to 1014 − 6 = ?Take 4 to get to 10: 14 − 4 = 10Take 2 more: 10 − 2 = 8Hop back0123456789101112131415161718192015 − 3 = 12Start on 15. Hop back 3. You land on 12.Think addition13 − 8 = ?8 + 5 = 13Think: 8 and what make 13?13 − 8 = 5Count up012345678910111212 − 9 = 3The numbers are close.Count up from 9 to 12.k5printables.com · Sheet #85424601 · Aligned with Common Core 1.OA.C.6

How to do it

  1. Take back to 10 first.
  2. Hop back on a number line.
  3. Count up when the numbers are close.

Teaching tip

Count up works best when the two numbers are close, like 12 − 9. This sheet is aligned with Common Core 1.OA.C.6.

Subtraction to 20 Chart for 1st grade (subtraction within 20), free printable
Printable preview

About this chart

Four ways to subtract within 20: take back to 10, hop back, think addition and count up.

What kids practice

Subtraction within 20 means taking away from a number that is 20 or less, like 15 - 7. These facts are harder than the ones within 10 because kids can't see them on two hands. Ten frames, number lines and addition facts they already know are what make them easy.

Watch for

  • Counting the starting number as the first hop, which gives an answer one too small.
  • Taking the smaller ones digit from the bigger one (13 - 5 becomes 12, because 5 - 3 = 2).
  • Losing track while counting back a long way. Counting up from the small number is usually shorter.

It's free to print, as many copies as you need. See the full subtraction within 20 guide for 1st grade.

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