Multiplying by Powers of Ten

This lesson introduces topic three, focusing on multiplying whole digit numbers, particularly by powers of ten. The lesson emphasizes using mental math and recognizing patterns to simplify multiplication. It revisits concepts from topic one, such as using exponents to represent powers of ten. The lesson includes examples and practice questions to reinforce quick multiplication skills, aiming for students to multiply numbers by powers of ten as easily as they do with times tables.

What is the main focus of Topic 3?

• Multiplying whole numbers by powers of ten

• Subtracting whole numbers

• Adding whole numbers

• Dividing whole numbers

What skill is emphasized in this lesson for multiplying by powers of ten?

• Writing equations

• Mental math

• Using a calculator

• Drawing diagrams

What is the first example number used to demonstrate patterns with powers of ten?

• 45

• 50

• 100

• 32

How is the number 100 represented using exponents?

• 10^4

• 10^2

• 10^1

• 10^3

What does 10 to the power of zero equal?

• 100

• 10

• 0

• 1

How many zeros are added when multiplying 32 by 1000?

• One

• Two

• Three

• Four

What should you not forget to add when writing large numbers?

• Fractions

• Decimals

• Commas

• Exponents

What is the result of 4 times 10 to the power of 3?

• 40000

• 400

• 40

• 4000

How many zeros are added when multiplying 85 by 100?

• One

• Four

• Two

• Three

What is the result of 16 times 10 to the power of 2?

• 160

• 1600

• 160000

• 16000