Section 6.4 Fractions,Decimals,Percents

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Presentation transcript:

Section 6.4 Fractions,Decimals,Percents Algebra Concepts Section 6.4 Fractions,Decimals,Percents

Percent-ratio that compares a number to 100.

Survey results-What subject do you prefer? Math or English?

.30 Can this fraction be reduced? 30/100 can easily be written as a decimal .30

Change % to a fraction #1 34% #2 60% #3 85%

Percent to decimal Divide percent by 100 (move decimal two places to the left)

Change percents to decimals #1 35% #2 2% #3 14.5%

The Long Way Changing decimal to percent Write decimal as a fraction and change fraction if necessary so it has a denominator of 100 The numerator is the percent

The Short Way Decimal to Percent Move the decimal two places to the right.

Change to percents #1 0.54 #2 0.04 #3 2.66 #4 0.548

Fraction to percent Change fraction to decimal Move decimal two places to the right

Change to percents #1 18 25 #2 35 50 #3 22 40

Have you ever gone fishing? Surveys show percents

23 out of 30 kids passed the test. What percent passed 23 out of 30 kids passed the test. What percent passed? Round to the nearest percent if necessary.