Converting fractions percentages

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Converting fractions percentages

  1. 1. Converting Fractions 2 3 4 we have looked at converting FRACTIONS to DECIMALS. We can also show fractions as PERCENTAGES. PER CENT means OUT OF (per) 100 (cent) is 75 % (the symbol for PERCENT)
  2. 2. Converting Fractions 2 - PERCENTAGES To convert any FRACTION to a PERCENTAGE, first convert it to a DECIMAL. 3 10 is 0 . 3 as a decimal
  3. 3. Converting Fractions 2 - PERCENTAGES With any decimal, it doesn’t matter how many zeroes we add to the numbers after the decimal point, as long as we write them after all the other numbers. 0 . 3 = 0 . 3 0 = 0 . 3 0 0 = 0 . 3 0 0 0 and so on
  4. 4. Converting Fractions 2 - PERCENTAGES For percent we only need 2 digits after the DECIMAL POINT. 0 . 3 = 0 . 3 0 multiply the number by 100 to get it to percentages Remember: to x 100 we move the digits 2 places to the left. 0 . 3 0 x 100 = 30
  5. 5. Converting Fractions 2 - PERCENTAGES 0 . 3 = 0 . 3 0 = 30 %
  6. 6. Converting Fractions 2 - PERCENTAGES 0 . 7 3 = 73 % 0 . 8 9 = 89 % if there are more than 2 numbers after the DECIMAL POINT, we use the same rules. 0 . 7 1 6 2 = 71 . 62 %
  7. 7. Converting Fractions 2 - PERCENTAGES Common decimals and percentages: 0 . 1 10 % 0 . 2 20 % 0 . 5 50 % 0 . 9 90 % 0 . 25 25 % 1 10 1 5 1 2 9 10 1 4
  8. 8. Converting Fractions 2 - PERCENTAGES Common decimals and percentages: 0 . 3 33 . 3 % 0 . 6 66 . 6 % 1 3 2 3 . . . .

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