Students find the missing number in each number bond diagram. The whole (top circle) breaks into two parts (bottom circles). Understanding these relationships builds a strong foundation for addition and subtraction.
Use for independent practice or assessment when teaching number decomposition. These worksheets help students apply their understanding of part-part-whole relationships with larger numbers.
Use a number line or base-ten blocks for support. Have your child practice thinking about "how many more to make the whole?" Then use the worksheet to reinforce the concept with written number bonds.
These worksheets support the following Common Core State Standards for Mathematics:
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Number bonds with sums to 20, where the whole in the top circle breaks into two parts below. Students fill in the missing part or whole in each diagram, for addition and subtraction practice to 20.
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