Ratios and Rate

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Mathematics

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Professional Development

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Easy

Luis Bello

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19 Slides • 16 Questions

Ratios and Rate

Presenter

Dr. Luis Bello

bello.luis@unionps.org

Learning Objectives

By the end of this section, you will be able to:

Write a ratio as a fraction

Write a rate as a fraction

Find unit rates

Find unit price

Translate phrases to expressions with fractions

Ratios

A ratio compares two numbers or two quantities that are measured with the same unit. The ratio of a to bis written a to b, a/b, or a:b

Translate Phrases to Expressions with Fractions

Simplify and Use Square Roots

Learning Objectives

By the end of this section, you will be able to:

Simplify expressions with square roots

Estimate square roots

Approximate square roots

Simplify variable expressions with square roots Use square roots in applications

Multiple Choice

Solve for x if x² = 144.

Multiple Choice

Solve for x.

x = 4/3

x = 9/4

x = 9/16

x = 3/16

Multiple Choice

Between which two whole numbers is the
√20 ?

5 and 6

10 and 2

4 and 5

3 and 4

Multiple Choice

The square of a number having 1 at the units place ends in

Multiple Choice

Simplify $\sqrt{242}$

$2\sqrt{11}$

$11\sqrt{2}$

$4\sqrt{23}$

$2\sqrt{11}$

Multiple Choice

Simplify $\sqrt{84}$

$4\sqrt{21}$

$2\sqrt{21}$

$21\sqrt{2}$

$21\sqrt{4}$

Multiple Choice

Simplify $\sqrt{45}$

$9\sqrt{5}$

$5\sqrt{9}$

$3\sqrt{5}$

$5\sqrt{3}$

Multiple Choice

13² = ______

225

196

169

166

Multiple Choice

2² = _____

Multiple Choice

In the computer lab, there are 1 PC for every 5 Mac computers. If the computer lab has a total of 24 computers, how many are Mac?

Multiple Choice

Jose swims 3 laps in a pool every 2 minutes. How long would it take him to swim 27 laps?

8 minutes

9 minutes

16 minutes

18 minutes

Multiple Choice

What is a Ratio?

Is a comparison of two quantities

A rate with a denominator of one

It is when the only factor the numerator and denominator share is a one

Two decimals that can be multiplied

Multiple Choice

Which is NOT equivalent to 3:5?

15:25

9:15

21:28

30:50

Multiple Choice

In a certain apartment building, the ratio of tenants to cars is 3:5. If there are 30 tenants, how many cars are there?

Multiple Choice

Express the ratio as a fraction in simplest form:

18 ounces to 3 cups

6 to 1

1/6

18/3

3/18

Multiple Choice

Express the ratio as a fraction in simplest form:

18 ounces to 3 cups

6 to 1

1/6

18/3

3/18

Ratios and Rate

Presenter

Dr. Luis Bello

bello.luis@unionps.org

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