JSS2: MATHEMATICS - 1ST TERM
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Properties of Whole Numbers I | Week 14 Topics|1 Quiz
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Properties of Whole Numbers II | Week 24 Topics|1 Quiz
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Properties of Whole Numbers III | Week 35 Topics|1 Quiz
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Indices | Week 42 Topics|1 Quiz
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Laws of Indices | Week 55 Topics|1 Quiz
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Whole Numbers & Decimal Numbers | Week 64 Topics|1 Quiz
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Standard Form | Week 73 Topics|1 Quiz
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Significant Figures (S.F) | Week 84 Topics|1 Quiz
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Fractions, Ratios, Proportions & Percentages I | Week 96 Topics|1 Quiz
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Fractions, Ratios, Proportions & Percentages II | Week 104 Topics|1 Quiz
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Fractions, Ratios, Proportions & Percentages III | Week 113 Topics|1 Quiz
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Approximation & Estimation | Week 121 Topic|1 Quiz
Proportion
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