Lesson 6

Sandwich Mass

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
X

TIMS Task

    1. 30 R1
    2. 103
    3. 41 R1
    4. 546 R2
    5. 748
    6. 900 R1

Possible mental math strategy for Questions 1A and 1B:

1A:
90 ÷ 3 = 30
so 91 ÷ 3 = 30 R1

1B:
500 ÷ 5 = 100
15 ÷ 5 = 3
so 515 ÷ 5 = 103
  1. Possible estimation strategy for F:
    900 × 7 = 6300
    so 6301 ÷ 7 = 900 R1

P. Division Practice

Use paper and pencil or mental math and your Division Strategies Menu to compute the following. Choose one problem and show or tell how you can solve it using mental math. Circle this problem. Estimate to see if your answers are reasonable.

    1. 91 ÷ 3 =
    2. 515 ÷ 5 =
    3. 247 ÷ 6 =
    4. 4916 ÷ 9 =
    5. 5984 ÷ 8 =
    6. 6301 ÷ 7 =
  2. Show or tell your estimation strategy for one problem in Question 1.