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Learning Resource Type

Learning Activity

Composing and Decomposing Numbers to 10 Assessment

Subject Area





In this activity, students will be assessed on decomposing a given number less than 10 into at least two pairs of smaller numbers and record their solutions using a number bond and number sentence.

This activity was created as a result of the ALEX Resource Development Summit.

    Mathematics (2019) Grade(s): KG


    Decompose numbers less than or equal to 10 into pairs of smaller numbers in more than one way, by using concrete objects or drawings, and record each decomposition by a drawing or equation.

    Unpacked Content



    • Decompose
    • Equation


    Students know:
    • "equal to" and the concept of equality meaning "the same as."
    • Addition is putting together numbers and subtraction is taking apart numbers.


    Students are able to:
    • Represent quantities physically, pictorially, and symbolically.


    Students understand that:
    • quantities may be named in a variety of ways.


    Learning Objectives

    Learning Objectives

    Students are able to:
    - use objects or drawings to decompose the given number into at least two pairs of smaller numbers.
    - record their solutions using pictures or equations. 

    Activity Details

    1. The teacher will print the exit slip for each student.
    2. Students will be given a number less than or equal to 10 to represent on the printed exit slip.
    3. Students will illustrate the given number into at least two pairs of smaller numbers on the number bond.
    4. Students will then complete the sentence frame writing the number pairs that make up the given number.
    Assessment Strategies

    Assessment Strategies

    The exit slip will be used as the assessment.

    Collect exit slips and use the following guidelines to ensure students met the learning objective.

    Check that the student:

    1. was able to decompose the given number into two pairs of smaller numbers.
    2. was able to record their solutions in the sentence frame using correct numbers.

    Variation Tips

    Once your students have mastered representing the given quantity physically, pictorially, and symbolically, encourage them to record the equation that represents their decomposition.