Topics
8. Multiply and divide fractions
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United States of AmericaUT
Grade 5

8.02 Multiplication as scaling

Lesson
Practice

Interactive practice questions

Which of the following is true about the scale factor $\frac{5}{5}$55​?

Multiplying a number by $\frac{5}{5}$55​ will make the number larger

A

Multiplying a number by $\frac{5}{5}$55​ will make the number smaller

B

Multiplying a number by $\frac{5}{5}$55​ will not change the number.

C
Easy
< 1min

Which of the following is true about the scale factor $\frac{8}{7}$87​?

Easy
< 1min

Which of the following is true about the scale factor $\frac{6}{7}$67​?

Easy
< 1min

Which of the following is true about the scale factor $\frac{43}{40}$4340​?

Medium
< 1min
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Outcomes

5.NF.5

Interpret multiplication as scaling.

5.NF.5.a

Compare the size of a product to the size of one factor on the basis of the size of the other factor, without performing the indicated multiplication.

5.NF.5.b

Explain why multiplying a given number by a fraction greater than 1 results in a product greater than the given number (recognizing multiplication by whole numbers greater than 1 as a familiar case); explain why multiplying a given number by a fraction less than 1 results in a product smaller than the given number; and relate the principle of fraction equivalence a/b = (n × a)/(n × b) to the effect of multiplying a/b by 1.

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