Learning Intention

Students will learn to solve multiplication problems by 10, 100 and 1000.

Objectives

By the end of the lesson, students will be able to:

1. Recognize the difference between multiplying by 10, 100 and 1000
2. Understand the relationship between whole numbers and decimals when multiplied by 10, 100 and 1000
3. Solve simple multiplication problems by 10, 100 and 1000

Materials

• Whiteboard
• Markers
• Copies of worksheets

Procedure

1. Begin the lesson by introducing the learning intention to students. Explain that students will be learning to solve multiplication problems with 10, 100 and 1000.

2. To help students understand the concept, begin by having them identify the different between 10x, 100x and 1000x by having them write examples on the board (e.g. 10x 2 is 20, 100x 2 is 200, 1000x 2 is 2000).

3. Explain the relationship between whole numbers and decimals when multiplied: When we multiply by 10 the decimals will move one place to the right (e.g. 0.7 x 10 = 7.0) and when we multiply by 100 and 1000, the decimals will move two and three places to the right respectively (e.g. 0.45 x 100 = 45.0 and 0.123 x 1000 = 123.0).

4. Give students a few minutes to work on examples with their partner. Circulate the room to check for any questions and misconceptions.

5. Provide students with a few worksheets, including some difficult questions they need to solve.

6. Allow time for questions, and encourage students to discuss with their partners.

7. Summarize the key points, and ask students to answer some ‘check for understanding’ questions (e.g. What is the difference between multiplying by 10, 100 and 1000?).

8. Assess students’ understanding and answer any questions they have.

Closure

By the end of the lesson, students should have a better understanding of how to solve multiplication problems with 10, 100 and 1000.