# Growing by Powers of Ten

Make multiplying by powers of ten more accessible to your students by focusing on patterns in the number of zeros!

#### Learning Objectives

Students will be able to describe what happens to the size of a number as it is multiplied by powers of 10. Students will be able to explain patterns in the number of zeros of the product when multiplying by powers of 10.

#### Introduction

(5 minutes)
• To begin the lesson, activate students' prior knowledge by using base ten blocks to review powers of 10.
• With the blocks, show a unit and ask what the value is. Write 1 on the board.
• Show a rod and ask what the value is. Write 10 on the board.
• Then, show a flat and ask what the value is. Write 100 on the board.
• Last, show a cube and ask what the value is. Write 1000 on the board.
• Ask students what would come after 1000. Write 10,000 on the board.
• If appropriate for your students, go to 100,000 and 1,000,000.
• Keep all of the numbers you wrote on the board for the next part of the lesson.

### Multiplication 3

3 games
8 online exercises
5 printable worksheets