Lesson 2

Building Plans in Cubeland

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
X

Use DPP item E to practice the addition facts and the related subtraction facts in Group B.

  1. 3 + 5 = 8
    8 − 3 = 5
    8 − 5 = 3
  2. 4 + 1 = 5
    5 − 4 = 1
    5 − 1 = 4
  3. 8 − 2 = 6
    2 + 6 = 8
    6 + 2 = 8
  4. 7 − 6 = 1
    6 + 1 = 7
    1 + 6 = 7

Ongoing Assessment

Use DPP item E to assess students' abilities to determine the unknown number in an addition or subtraction sentence for the facts in Group B [E11].

See the Letter Home for targeted practice ideas.

E. Fact Families

Complete each fact family.

  1. 5 + 3 = 8

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  2. 1 + 4 = 5

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  3. 8 − 6 = 2

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  4. 7 − 1 = 6

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