Lesson 7

Area Riddles

Est. Class Sessions: 1

Daily Practice and Problems

Teacher Notes
X

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

  1. 11 − 10 = 1
  2. 13 − 8 =  5
  3.  9 = 4 − 5
  4. 12 −  5 = 7
  5. 13 − 4 =  9
  6. 13 − 10 = 3
  7. 12 − 10 = 2
  8. 4 = 12 − 8
  9. Possible response: I know 13 − 3 = 10. 4 is one more than 3, so 13 minus 4 is taking away one more, so 13 − 4 = 9.

Ongoing Assessment

Use DPP item V to assess students' fluency with the subtraction facts related to the addition facts in Group E [E10].

See the Letter Home for targeted practice ideas.

V. More Subtraction Practice

Solve.

  1. − 10 = 1
  2. 13 − 8 =
  3. = 14 − 5
  4. 12 − = 7
  5. 13 − 4 =
  6. − 10 = 3
  7. 12 − = 2
  8. 4 = − 8
  1. Show or tell your strategy for solving Question E.