Carson Elementary And Intermediate Algebra 3e printable pdf download

Carson Elementary And Intermediate Algebra 3e

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Carson Elementary and Intermediate Algebra 3e

Section 3.2

Objectives

Write a percent as a fraction or decimal number.

Write a fraction or decimal number as a percent.

Translate and solve percent sentences.

Solve problems involving percents.

Vocabulary

Percent

A ratio representing some part out of 100

Prior Knowledge

Ratio: A ratio is a comparison of two quantities using a quotient.



, where b ≠ 0 and d ≠ 0

Proportion: An equation in the form

Cross Product: The cross product can be used to solve for a missing quantity

New Concepts

Converting a fraction to a decimal, and from a decimal to a percent

FRACTION

DECIMAL

PERCENT

Divide

move decimal to the right 2 places

START HERE:

Example 1

To convert a decimal to

The fraction

is the

Write

as a decimal

a percent, move the

decimal point two

same as 3 divided by 4,

places to the right and

so do the division,

write with a percent (%)

adding a decimal and

sign.

zeroes as necessary.

. 0



. 0

0 .



. 0

Example 2