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7-5 Fractions, Decimals, and Percents (pgs 312-315) 7-6 Percents Greater than 100 and Less than 1% (pgs 316-318) Indicator N7 – Solve Problems using percents

Indicator N7 – Solve Problems using percents

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7-5 Fractions, Decimals, and Percents (pgs 312-315) 7-6 Percents Greater than 100 and Less than 1% (pgs 316-318). Indicator N7 – Solve Problems using percents. Changing percents to decimals. Divide by 100 (Move the decimal 2 spaces to the left) 245% = 2.45 0.075% = 0.00075. You Try. - PowerPoint PPT Presentation

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Page 1: Indicator N7 – Solve Problems using percents

7-5 Fractions, Decimals, and Percents (pgs 312-315)

7-6 Percents Greater than 100 and Less than 1% (pgs 316-318)

Indicator N7 – Solve Problems using percents

Page 2: Indicator N7 – Solve Problems using percents

Changing percents to decimals• Divide by 100

(Move the decimal 2 spaces to the left)

1) 245% = 2.45

2) 0.075% = 0.00075

Page 3: Indicator N7 – Solve Problems using percents

You Try

1) 256.5%

2.565

2) 0.06%

0.0006

Page 4: Indicator N7 – Solve Problems using percents

Changing Percents to FractionsEasy one (review) 14 % is 14 = 7 100 50 (reduce by the GCF 2)Harder6.5% is 6.5 x10 = 65 = 13 100x10 1000 200

Hardest10 ¾% is 10 ¾ = 43 x 1 = 43 100 4 100 400

Page 5: Indicator N7 – Solve Problems using percents

• You Try

Change the percents to fractions

1) 0.06% 2) 250% 3) 30 1/3 %

3 2 ½ 91

5000 300

Page 6: Indicator N7 – Solve Problems using percents

Write a decimal as a percent

• You multiply by 100

(moves decimal 2 spaces to the right)

1) 0.0085 = 0. 85%

2) 1 = 100%

3) 42 = 4200%

Page 7: Indicator N7 – Solve Problems using percents

Changing fractions to percents• Change to fraction to a decimal first

then multiply by 100

1) 3 ¾ = 3.75 = 375%

2) 1 = 0.002 = 0.2%

500

Page 8: Indicator N7 – Solve Problems using percents

Review of solving percent equationsOf (x) Is (=) What (n)

1) What percent of 45 = 2

n × 45 = 2

45 45

n = 0.04 or 4.4%