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Numbers - Fractions, Decimals and Percentages

Converting decimals to percentages is pretty easy really, so don't worry too much about this. Just put it as something over a hundred and cancel it down.
  1. Express each of the following as a percentage: Put the percent symbol after the number. Eg 66%
    1. 0.25
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    2. 0.5
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    3. 0.75
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    4. 0.1
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    5. 0.4152
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    6. 0.8406
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  2. Express each percentage as a decimal:
    1. 50%
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    2. 12%
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    3. 40%
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    4. 34%
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    5. 60.2%
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    6. 54.9%
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  3. Express each of the following as a percentage. Round your answers to 1 d.p. where necessary.
    1. 1/2
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    2. 1/4
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    3. 1/8
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    4. 3/4
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    5. 1/25
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    6. 2/3
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    7. 4/15
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    8. 2/7
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    All you're doing is multiplying by 100 Now you're dividing by 100 — so just move the decimal point to the left.
  4. Express each percentage as a fraction in its lowest terms:
    It's best to put them over 100 Then get rid of the decimal point by multiplying top and bottom by 10. Then just cancel down as normal.
    1. 25%
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    2. 60%
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    3. 45%
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    4. 8.2%
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    5. 88.6%
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    6. 30%
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    7. 32.4%
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  5. 119 out of 140 houses on an estate have DVD players. What percentage is this?
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  6. In an exam Tina scored 52/80. The grade she receives depends on the percentage scored. What grade will Tina get?

    Grades

    51-60% D
    61-70% C
    71-80% B
    81-90% A
    91-100% At
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