21.3

Multiple Choice

Which one of the following numbers does not belong: 400, 220, 260, 330?

• 400

• 220

• 260

• 330

Open Ended

What is scaling?

Open Ended

What 3 questions do I ask myself when scaling numbers?

Multiple Choice

Which fraction should be used to complete the statement ___ × 5 < 5?

• 2/2

• 3/4

• 5/3

• 1/2

Multiple Choice

Which fraction should be used to complete the statement ___ × 5 > 5?

• 2/2

• 3/4

• 5/3

• 1/2

Multiple Choice

Which fraction should be used to complete the statement ___ × 5 = 5?

• 2/2

• 3/4

• 5/3

• 1/2

Reorder

#1

Order the following expressions from LEAST to GREATEST without calculating the products.

• (7/9) × 348,980

• (50/50) × 348,980

• (12/11) × 348,980

1

2

3

• 1
• 2
• 3

Open Ended

#2

Is Jonah correct in saying that the population of Town A is nine tenths of the population of Town B? Explain your answer.

Multiple Choice

Which of the following statements about multiplying a number by a fraction is true?

• The product is always less than the number.

• The product is always greater than the number.

• The product can be less than, equal to, or greater than the number depending on the fraction.

• The product is always equal to the number.

Open Ended

#5

How does (4/4) × (8/5) compare to 8/5? Explain your reasoning.

Open Ended

How does interpreting multiplication as scaling help you understand the relationship between factors and products?