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Percent's - PowerPoint PPT Presentation


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Percent's. Alla Kiriena Zane. Vocabulary. Percent : A ratio whose denominator is 100 Proportion : A n equation starting that two ratios are equivalent. Decimal : a number written using the base ten place value system where a decimal point separates the ones’ and tenths’ digits.

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percent s

Percent's

Alla

Kiriena

Zane

vocabulary
Vocabulary
  • Percent:A ratio whose denominator is 100
  • Proportion:An equation starting that two ratios are equivalent.
  • Decimal: a number written using the base ten place value system where a decimal point separates the ones’ and tenths’ digits.
  • Percentequation: You can represent ‘a is p percent of b’ with the equation where a is part of the base b and p% is percent.
sections of the chapter
Sections of the chapter
  • 9.1 Percent's and fractions
  • 9.2 Using proportions
  • 9.3 percent’s and decimals
  • 9.4 the percent equation
  • 9.5 Circle graphs
understanding percent s
Understanding Percent’s
  • The square has 16 out of 100 squares shaded. You can say that 16 percent of the squares are shaded.
  • Numbers: you can write 16 percent 16/100 or as 16%.
  • Algebra: you can write p percent as p/100 or as p%.
  • SOLVINGPERCENTPROBLEMS: You can represent “ a is p of b “ with proportion a/b=P/100 where a is part of the base b and p% or p/100 is the percent.
examples for doing percent s and fractions
Examples for doing percent's and fractions
  • Common percent's that you should know. For EX: 48%= you move the decimal two spaces to the left and its going to equal the same thing only in decimal 0.48
  • Example 1:your class has raised 80% of its goal of $8000 for a trip to Washington, D.C. How much money has your class raised?
  • Solve: a= p% b write percent equation.
  • =80%x8000 substitute 80 for p and 8000 for b.
  • =0.8x8000 write percent as a decimal.
  • =6400 multiply.
where or what job uses percent s
where or what job uses percent's?
  • Sales disturbers –They use percent's to mark clothes and other items.
  • Insurance –They use percent's for discounts.
  • Retailers- They use presents for mark ups and sales.
  • Teachers – teachers use percent for grading and different documents.
thank you for watching
Thank you for watching

MADE BY:

ALLA

KIRIENA

ZANE