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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:

  • Equivalent Ratio
  • Simplifying Ratio

A ratio is a way of comparing two or more quantities. The ratio is a relationship between two numbers indicating how many times the first number contains the second for example, if a basket contains, 8 oranges and 5 mangoes the ratio of oranges to mangoes is 8 ratio 5, written as 8:5 or 8 to 5.

‘Ratio’ can be written in the following form.

1. m : n

2. m to n

3. \( \frac{m}{n} \) (as fraction)

Equivalent Ratio:

Equivalent Ratios are Equal Ratios

Example:

a. 3 : 4,  6 : 8,   9 : 12,  12 : 16 are equivalent ratios because:

3 : 4  =  3 × 2 : 4 × 2 = 6 : 8

      =  3 × 3 : 4 × 3: 4 × 2 =  9 : 12

      =  3 × 4 : 4 × 4   = 12 : 16

b. 100 : 50,  50 : 25,  20 : 10, 10 : 5 are equivalent because

 

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