Skills Covered

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 — Decompose numbers less than or equal to 10 into pairs in more than one way
• K.OA.A.5 — Fluently add and subtract within 5
• 1.OA.B.4 — Understand subtraction as an unknown-addend problem