Lesson 1

Order of Operations

Est. Class Sessions: 2

Daily Practice and Problems

Teacher Notes
X

TIMS Task

Use this DPP item to provide practice with the fact families for the multiplication and division facts for the 2s and 3s.

This item can be completed orally as a class. One student can solve the given facts and two other students can name each of the other two related facts.

  1. 27; 3; 9 × 3 = 27; 27 ÷ 3 = 9
  2. 20; 2; 10 × 2 = 20; 20 ÷ 2 = 10
  3. 16; 8; 8 × 2 = 16; 16 ÷ 8 = 2
  4. 12; 2; 2 × 6 = 12; 12 ÷ 2 = 6
  5. 30; 10; 3 × 10 = 30; 30 ÷ 10 = 3
  6. 10; 2; 2 × 5 = 10; 10 ÷ 2 = 5
  7. 2; 1; 2 × 1 = 2; 2 ÷ 1 = 2
  8. 21; 7; 3 × 7 = 21; 21 ÷ 7 = 3

B. Fact Families for × and ÷

The following four facts belong to the same fact family.

3 × 2 = 6 2 × 3 = 6
6 ÷ 2 = 3 6 ÷ 3 = 2

Solve each pair of related number sentences below.

Then, give two other facts that are in the same fact family.

    1. 3 × 9 =
    2. 27 ÷ 9 =
    1. 2 × 10 =
    2. 20 ÷ 10 =
    1. 2 × 8 =
    2. 16 ÷ 2 =
    1. 6 × 2 =
    2. 12 ÷ 6 =
    1. 10 × 3 =
    2. 30 ÷ 3 =
    1. 5 × 2 =
    2. 10 ÷ 5 =
    1. 1 × 2 =
    2. 2 ÷ 2 =
    1. 7 × 3 =
    2. 21 ÷ 3 =