Lesson 4

Button Place Value

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X

Use DPP item L to practice the addition facts and the related subtraction facts for Group C.

  1. 2 + 8 = 10

    10 − 2 =  8

    10 −  8 = 2

    8 + 2 = 10

  2. 7 + 3 = 10

    3 +  7 = 10

    10 −  7 = 3

    10 −  3 = 7

  3.  9 = 3 + 6

    6 + 3 =  9

    9 −  6 = 3

     9 − 3 =  6

  4. 9 − 2 =  7

    7 +  2 = 9

    9 − 7 = 2

    2 + 7 = 9

  1. 10 − 4 =  6

    6 +  4 = 10

    10 − 6 = 4

    4 + 6 = 10

  2. 10 = 5 +  5

    10 − 5 =  5

  1. 1 + 9 = 10               10 − 9 = 1

    9 + 1 = 10               10 − 1 = 9

Ongoing Assessment

Use DPP item L to assess students’ fluency with the addition facts, the related subtraction facts, and finding the unknown for the facts in Group C [E11, E13].

L. Fact Families: Group C

Complete each fact family.

  1. 2 + 8 =

    10 − 2 =

    10 − = 2

    8 + 2 =

  2. 7 + 3 =

    3 + = 10

    10 − = 3

    10 − = 7

  3. = 3 + 6

    6 + 3 =

    9 − = 3

    − 3 =

  4. 9 − 2 =

    7 + = 9

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  1. 10 − 4 =

    6 + = 10

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  2. 10 = 5 +

    10 − 5 =

  1. Use 1, 9, 10. Write two addition and two subtraction number sentences.


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