Lesson 5

Problems of Scale

Est. Class Sessions: 1–2

Daily Practice and Problems

Teacher Notes
X

TIMS Bit

  1. 2 × 2 = 4; 4 ÷ 2 = 2
  2. 8 × 8 = 64; 64 ÷ 8 = 8
  3. 36 ÷ 6 = 6; 6 × 6 = 36
  4. 100 ÷ 10 = 10;
    10 × 10 = 100
  5. 9 ÷ 3 = 3; 3 × 3 = 9
  6. 4 × 4 = 16; 16 ÷ 4 = 4
  7. 9 × 9 = 81; 81 ÷ 9 = 9
  8. 25 ÷ 5 = 5; 25 = 5 × 5

Ongoing Assessment

Use DPP item U to document students' fluency with the multiplication and division facts for the square numbers [E10].

See the Letter Home for targeted practice ideas.

U. Quiz: Square Numbers

Complete the number sentences for the related facts.

  1. 2 × 2 = ______

    ______ ÷ 2 = ______
  2. 8 × 8 = ______

    ______ ÷ ______ = 8
  3. 36 ÷ 6 = ______

    ______ × 6 = ______
  4. 100 ÷ 10 = ______

    10 × ______ = 100
  5. 9 ÷ ______ = 3

    3 × ______ = ______
  6. 4 × ______ = 16

    ______ ÷ ______ = 4
  7. 9 × = ______ 81

    ______ ÷ ______ = 9
  8. ______ ÷ 5 = 5

    25 = ______ × ______