Decomposing Numbers Worksheet
Small whole numbers are broken apart in two different ways, with each decomposition shown through pictures, objects, or addition equations.

- Grades
- Preschool–Pre-K, Grades 1–2, Elementary
- File type
- Preparation
- Print ready
- Subject
- Math, Addition and Subtraction, Addition
- Topic
- what is decomposing numbers, decomposing a number
- Resource types
- Worksheets & Printables, Worksheets
- Preparation
- Print ready
About this resource
What's inside this resource
Decomposing printables/worksheets/worksheets-by-subject/math-worksheets/early-math-worksheets/numbers-worksheets">Numbers Worksheet
This educational math resource assists young learners in grades K-2 with developing essential skills for understanding place value and basic addition. Students will reinforce their learning by breaking numbers apart into paired components. For example, they may decompose the number 12 into the pairs 6 and 6 or 7 and 5. Teachers can implement this resource in small groups or assign it individually to meet each student's needs. The engaging worksheet format promotes active participation and comprehension. Students will gain confidence with decomposing numbers in multiple ways, preparing them to apply this understanding toward more complex math concepts. This useful resource supports educators in making math accessible and hands-on for early elementary students.
In the classroom
Teaching tips & learning objectives
Learning objectives
Break a small number into two addends
Show the same whole in two different ways
Connect a concrete or drawn model with an equation
Teaching tips
Use two colors of counters to make the two parts visible.
Place both equations side by side and discuss what changes and what stays equal. Extend the number range with these decomposing teen numbers worksheets.
Skills covered
Part-part-whole reasoning — one value is separated into pairs.
Number flexibility — multiple decompositions represent the same total.
Representation — pictures, objects, and equations communicate equivalent ideas.
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Resource details
Concepts & topics
Core concepts
Number decomposition
Multiple addend pairs
Part-part-whole
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