Lesson 2

Another Average Activity

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X

TIMS Task

    1. 301
    2. 595
    3. 496
    4. 402
    5. 384
    6. 395
  1. Using mental math for Question 1F:
    80 × 5 = 400 and 400 − (5 × 1) = 395.
  2. 40 × 7 = 280s

F. Multiplication

Use paper and pencil or mental math to solve the following problems. Estimate to see whether your answers are reasonable.

    1. 43 × 7 =
    2. 85 × 7 =
    3. 62 × 8 =
    4. 67 × 6 =
    5. 96 × 4 =
    6. 79 × 5 =
  1. Choose a problem and show or tell how you can solve it using mental math.
  2. Show or tell an estimation strategy for Question 1A.