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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
PDF
Preparation
Print ready

Updated Feb 19, 2024

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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