Lesson 3

Close Enough!

Est. Class Sessions: 3

Daily Practice and Problems

Teacher Notes
X

TIMS Bit

    1. 5
    2. 5
    3. 7
    4. 2
    1. 9
    2. 7
    3. 16
    4. 16
    1. 7
    2. 5
    3. 12
    4. 12
    1. 7
    2. 7
    1. 12
    2. 4
    3. 4
    4. 12
    1. 9
    2. 9
  1. Possible response: There is only one other problem because they are doubles.

Ongoing Assessment

Use DPP item O to assess students' abilities to determine the unknown number in an addition or subtraction sentence relating three whole numbers for the facts in all groups [E7].

See the Letter Home for targeted practice.

O. Fact Families

Complete the number sentences for each fact family.

    1. 7 − = 2
    2. + 2 = 7
    3. − 2 = 5
    4. 5 + = 7
    1. 16 − = 7
    2. + 9 = 16
    3. − 7 = 9
    4. 7 + 9 =
    1. 12 − 5 =
    2. 7 + = 12
    3. − 7 = 5
    4. 5 + 7 =
    1. 14 − 7 =
    2. 7 + = 14
    1. − 8 = 4
    2. 8 + = 12
    3. 12 − = 8
    4. 4 + 8 =
    1. 18 − = 9
    2. + 9 = 18
  1. Show or tell why there is only one other problem in the fact family for Question 4 and Question 6.