Lesson 7

Workshop: Addition and Subtraction

Est. Class Sessions: 1

Daily Practice and Problems

Teacher Notes
X

TIMS Bit

  1. B. 8
  2. Possible response: 24 is 1 less than 25, so 24 × 8 is 8 less than 25 × 8.
  3. Possible response: 8 quarters is $2.00, so 25 × 8 is 200. 24 × 8 is 8 less than 200 or 192.

Y. How Much Less?

  1. 24 × 8 is less than 25 × 8. How much less? Fill in the circle by the correct answer.

    1. 1
    2. 8
    3. 16
    4. 24
    5. 25

  2. Show or tell how you found your answer to Question 1.
  3. Find 24 × 8 using mental math.