Lesson 2

Repeated Addition and Multiplication

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X

DPP item E provides practice with strategies for solving the subtraction facts in Group D.

  1. 13
  2. 10
  3. 9
  4. 14
  5. 3
  6. 17
  1. Possible strategy: I know 18 − 9 = 9. If I am subtracting 1 less, the unknown must be one less than 18.

Ongoing Assessment

Use DPP item E to assess students' abilities to determine the unknown number in an addition or subtraction sentence relating three whole numbers for the facts in Group D [E10].

See the Letter Home for targeted practice ideas.

E. Missing Numbers

Find the missing numbers to make each sentence true.

  1. 12 − 6 = − 7
  2. 20 − = 19 − 9
  3. − 5 = 8 − 4
  4. 15 − 8 = − 7
  5. 7 − 4 = 6 −
  6. 18 − 9 = − 8
  1. Show or tell how you solved Question F.