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Operations and Algebraic Thinking: Decompose Numbers up to 10 CCSS K.OA.3 Facts & Worksheets

Numbers can be decomposed in more than one way. For kindergarten, the standard is for numbers less than ten, and the pairs are sufficient.

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Operations and Algebraic Thinking Decompose Numbers up to 10 K.OA.3 Worksheets
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Numbers can be decomposed in more than one way. For kindergarten, the standard is for numbers less than ten, and the pairs are sufficient. By using objects or drawings, record each decomposition. Students will begin to understand that different combinations can arrive at the same total.

See the fact file below for more information on how to decompose numbers up to 10 or alternatively, you can download our 23-page Operations and Algebraic Thinking: Decompose Numbers up to 10 CCSS K.OA.3 worksheet pack to utilise within the classroom or home environment.

Key Facts & Information

LEARNING OBJECTIVE

  • At the end of the lesson, students will learn what it means to represent a number in different ways and explore decomposing numbers.

A NOTE FOR THE TEACHER

  • When teaching decomposing numbers, try the following in your lesson:
    • Use the number of objects to correlate with the number. This way, students recognize the quantity with a written digit.
    • Teaching vocabulary is important at this stage. Students must be able to correctly associate a written number with the spoken word and its tangible amount.

THEORY

  • Numbers can be decomposed in more than one way. For kindergarten, the standard is for numbers less than ten, and the pairs are sufficient. By using objects or drawings, record each decomposition. Students will begin to understand that different combinations can arrive at the same total.
  • Start with a total and ask your student: If I have five buttons, what are three ways to split up the groups?

  • We can split 5 up into a group of 4 and a group of 1

  • We can split 5 up into a group of 3 and 2

  • We can split 5 up into a group of 2 and 3

  • In all three cases, the total number still adds up to FIVE buttons.
  • Once the basics of splitting physical objects into groups are established, you can then move to establishing operations and missing numbers to arrive at a total. This will form the foundations of addition and subtraction. Again, use physical objects to visually demonstrate the concept before proceeding to abstract, numerical problems.
  • If I have 5 pretzels in total and one group has 3, what is the missing number of the second group?

  • The student can count in sequence and use their fingers to count to three on one hand and count the remainder on the other until they arrive at five. Thus, the answer is 2.
  • If I have 6 pretzels in total and one group as 2, what is the missing number for the second group?

  • Here, the student can cross out the known figure, which is 2, and then count the remainder. Thus, the answer is 4.

Operations and Algebraic Thinking: Decompose Numbers up to 10 CCSS K.OA.3 Worksheets

This is a fantastic bundle that includes everything you need to know about Operations and Algebraic Thinking: Decompose Numbers up to 10 to across 23 in-depth pages. These are ready-to-use worksheets that align with the Common Core CCSS code K.OA.3 for Operations and Algebraic Thinking: Decompose Numbers up to 10.

Table of contents:

  • A lesson plan
  • Warm-up activity
  • Math theory explained
  • Assisted learning activities
  • Independent learning activities
  • Extension activities and games
  • Answer keys

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Link will appear as Operations and Algebraic Thinking: Decompose Numbers up to 10 CCSS K.OA.3 Facts & Worksheets: https://kidskonnect.com - KidsKonnect, July 14, 2021

Use With Any Curriculum

These worksheets have been specifically designed for use with any international curriculum. You can use these worksheets as-is, or edit them using Google Slides to make them more specific to your own student ability levels and curriculum standards.

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