Lesson 8

Subtraction Strategies

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X
  1. 6 + 3 = 9
  2. 9 = 2 + 7
  3. 5 + 4 = 9
  4. 6 + 3 = 9
  5. 9 = 1 + 8
  6. 0 + 9 = 9
  7. Responses will vary. I thought about what number plus 1 is 9. I know that number is one less than 9.
    So 9 = 1 + 8.

BB. More Missing Numbers

Fill in the missing numbers to make the number sentences true.

  1. 6 + = 9
  2. 9 = 2 +
  3. 5 + = 9
  4. + 3 = 9
  5. 9 = 1 +
  6. + 9 = 9
  7. Show or tell how you solved Question E.