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Skills Covered

  • Decompose numbers within 5
  • Find missing parts in number bonds
  • Understand part-part-whole relationships
  • Build addition and subtraction fluency
  • Develop number sense for small numbers
  • Practice mental math strategies

How to Use These Worksheets

Students look at each number bond diagram and fill in the missing number - either a part or the whole. Each diagram shows a whole number at the top connected to two parts below. Understanding these relationships builds a strong foundation for addition and subtraction.

In the Classroom

Use during math centers or guided practice when teaching number decomposition. These worksheets help students see that numbers can be broken apart and put back together in different ways. Great for Kindergarten math stations.

At Home

Practice with real objects - split 5 toys into two groups and ask your child to figure out how many are in each group. Then use the worksheet to reinforce the concept with written number bonds.

Tips for Success

  • Use counters or small objects to model each number bond
  • Encourage students to check their work by adding the two parts
  • Point out that the whole always equals the sum of both parts
  • Use the answer key for self-checking

Common Core Standards Alignment

These worksheets support the following Common Core State Standards for Mathematics:

  • K.OA.A.3 Break a number up to 10 into two parts several ways, recording each as a picture or equation (7 = 3 + 4).
  • K.OA.A.5 Add and subtract quickly and accurately with numbers up to 5.

© Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.

Number Bonds to 5

Pre-K – K

Practice number bonds with sums to 5, where a whole number at the top connects to two parts below. Students fill in the missing number in each diagram, either a part or the whole.

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What’s Included

  • 3 unique number bond worksheets
  • Sums within 5
  • Part-part-whole diagram format
  • Missing parts and wholes practice
  • Answer keys included
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