Proportions

Presentation

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Mathematics

•

7th Grade

•

Practice Problem

•

Medium

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CCSS

3.NF.A.3B, 7.RP.A.2B, 6.RP.A.3C

Standards-aligned

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6 Slides • 11 Questions

Proportions

Multiply the cross products to determine if the ratios are equal.

Another example:

For the following slides, use the cross products method and determine if the ratios are equal or not.

Multiple Choice

\frac{4}{7}=\frac{2}{4}

True

False

Multiple Choice

\frac{2}{3}=\frac{4}{6}

True

False

Multiple Choice

$\frac{4}{8}=\frac{3}{6}$

True

False

Multiple Choice

What number would make this a true statement?

Pause to watch the

solving proportions

video.

Solve the proportions for the following slides.

Multiple Choice

\frac{4}{5}=\frac{8}{x}

x = 8

x = 10

x = 4

x = 5

Multiple Choice

$\frac{x}{5}=\frac{8}{10}$

x=7

x=4

x=2

x=3

Multiple Choice

$\frac{25}{1}=\frac{x}{3}$

x=75

x=50

x=27

x=43

Multiple Choice

x = 16

x = 28

x = 1/26

x = 26

Multiple Choice

x = 6

x = 25

x = 28

x = 17

Multiple Choice

c = 4

c = 8

c = 14

c = 10

Multiple Choice

What is a proportion?

When two ratios can be simplified

When two ratios are equivalent and show the same value

When two ratios have the exact same numbers

When two ratios can be multiplied by 2

Proportions

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