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Fractions, Decimals, & Percents

Fractions, Decimals, & Percents. PS 7-1, 7-2. Percent. A ratio of a number to 100 The symbol % is used to indicate that a number is a percent Comes from the Latin per centum which means “per hundred”. Percents as Fractions. Examples 52% = 12% = 25% = . 32% = 32 per hundred

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Fractions, Decimals, & Percents

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  1. Fractions, Decimals, & Percents PS 7-1, 7-2

  2. Percent • A ratio of a number to 100 • The symbol % is used to indicate that a number is a percent • Comes from the Latin per centum which means “per hundred”

  3. Percents as Fractions • Examples • 52% = • 12% = • 25% = • 32% = 32 per hundred Which is the same as • 32 hundredths  32 100

  4. Percents as Decimals • 17% = 17 per hundred = 17 hundredths So… since we know our place values…. 17 hundredths = .17 Examples 75% = 6% = 13% =

  5. Decimals as Percents • Move the decimal to the RIGHT of the digit in the HUNDREDTHS place • (2 places to the right) • .12 and 12% both mean “12 hundredths” .12  12%

  6. Fractions as Percents • Convert fraction to decimal with long division OR • Find an equivalent fraction with a denominator of 100

  7. Assignment • P. 306 – 307 #17-32 odds, 33-47, 53, 54

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