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JSS1: MATHEMATICS - 1ST TERM
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Whole Numbers I | Week 13 Topics|1 Quiz
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Whole Numbers II | Week 21 Topic|1 Quiz
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Counting in Base Two | Week 34 Topics|1 Quiz
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Arithmetic Operations | Week 43 Topics|1 Quiz
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Lowest Common Multiple (LCM) | Week 52 Topics|1 Quiz
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Highest Common Factor | Week 61 Topic|1 Quiz
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Fraction | Week 77 Topics|1 Quiz
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Basic Operations with Fractions I | Week 83 Topics|1 Quiz
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Basic Operations with Fractions II | Week 91 Topic|1 Quiz
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Directed Numbers | Week 103 Topics|1 Quiz
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Estimation and Approximation I | Week 113 Topics|1 Quiz
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Estimation and Approximation II | Week 126 Topics|1 Quiz
Lesson 7,
Topic 6
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Conversion of Fraction to Percentage
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Topic Content:
- Conversion of Fraction to Percentage
Remember that 23% means \(\frac{23}{100} \). Thus 23% is the same as 0.23.
To convert a fraction to a percent, first divide the numerator by the denominator. Then multiply the decimal by 100.
e.g. the fraction \(\frac{4}{5} \) = 0.8
0.8 × 100 = 80
Therefore, the fraction \(\frac{4}{5} \) is equivalent to 80%
Worked Example 7.61:
Write \(\frac{2}{25} \) as a percent
Solution
\(\frac{2}{25} \) = 2 ÷ 25 = 0.08
= 0.08 × 100 = 8
Therefore, the fraction \(\frac{2}{25} \) is equivalent to 8%
Worked Example 7.62:
Write \(\frac{7}{4} \)as a percent
Solution
\(\frac{7}{4} \) = 7 ÷ 4 = 1.75
1.75 × 100 = 175%
Therefore, the fraction 7/4 is equivalent to 175%