Lesson 3

Doubles

Est. Class Sessions: 2–3

Daily Practice and Problems

Teacher Notes
X

TIMS Task

Refer students to the Multiplication Strategies Menu in the Student Guide Reference section.

Students will choose different problems to solve using mental math. Questions A, B, and D can be solved by thinking about money.

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H. Multiplying

Sandra solved 41 × 7 by breaking 41 into tens and ones. She wrote:



Solve three of these multiplication problems using Sandra's method.
Choose one to solve using mental math.

  1. 49 × 6
  2. 27 × 5
  3. 33 × 8
  4. 25 × 9