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JSS2: MATHEMATICS - 1ST TERM

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  1. Properties of Whole Numbers I | Week 1
    4 Topics
    |
    1 Quiz
  2. Properties of Whole Numbers II | Week 2
    4 Topics
    |
    1 Quiz
  3. Properties of Whole Numbers III | Week 3
    5 Topics
    |
    1 Quiz
  4. Indices | Week 4
    2 Topics
    |
    1 Quiz
  5. Laws of Indices | Week 5
    5 Topics
    |
    1 Quiz
  6. Whole Numbers & Decimal Numbers | Week 6
    4 Topics
    |
    1 Quiz
  7. Standard Form | Week 7
    3 Topics
    |
    1 Quiz
  8. Significant Figures (S.F) | Week 8
    4 Topics
    |
    1 Quiz
  9. Fractions, Ratios, Proportions & Percentages I | Week 9
    6 Topics
    |
    1 Quiz
  10. Fractions, Ratios, Proportions & Percentages II | Week 10
    4 Topics
    |
    1 Quiz
  11. Fractions, Ratios, Proportions & Percentages III | Week 11
    3 Topics
    |
    1 Quiz
  12. Approximation & Estimation | Week 12
    1 Topic
    |
    1 Quiz
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Topic Content:

  • Meaning of Proportion
  • Types of Proportion

What is a Proportion?

A proportion is a statement or equation that tells us that two ratios or fractions are equivalent. Proportion is a comparison between two numbers, things or people.

For example, you want to know the number of boys there are in comparison to the number of girls in a room. This comparison is written in the form of a proportion. This can be written in the colon or you can write the proportion in the form of an equivalent fraction as follows:

5:10 or \( \frac{5}{10} =\frac{1}{2} \) are equivalent fractions.

Since \( \frac{5}{10} =\frac{1}{2}\\ \scriptsize cross \; multiply \\ \scriptsize 5 \; \times \; 2 =1 \; \times \; 10\\ \scriptsize 10 = 10 \)

Therefore, they are equivalent fractions.

There are two types:

1. Direct proportion

2. Indirect (inverse) proportion