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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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To find the square of a decimal or fraction, multiply the decimal or fraction by itself.

Example:

Find the square of the following

a.    (0.5)2

b.    (16.2)2

c.    \( \left ( \frac{5}{6} \right)^2\)

d.    \( \left ( \frac{1}{4} \right)^2\)

e. \( \left (\scriptsize 3 \frac{1}{3} \right)^2\)

Solution:

a. \( \scriptsize (0.5)^2 = 0.5 \: \times \: 0.5 \)

= \( \frac{5}{10} \: \times \: \frac{5}{10}\\ = \frac{25}{100} \\ = \scriptsize 0.25 \)

b. \( \scriptsize (16.2)^2 = 16.2 \: \times \: 16.2 \)

= \( \frac{162}{10} \: \times \: \frac{162}{10}\\ = \frac{26,244}{100} \\ = \scriptsize 262.44 \)

c. \( \left ( \frac{5}{6} \right)^2 \\ = \frac{5}{6} \: \times \: \frac{5}{6} \\ = \frac{25}{36}\)

d. \( \left ( \frac{1}{4} \right)^2 \\ = \frac{1}{4} \: \times \: \frac{1}{4} \\ = \frac{1 \: \times \: 1}{4 \: \times \: 4}\\ = \frac{1}{16}\)

e. \( \left (\scriptsize 3 \frac{1}{3} \right)^2 \\ =\left ( \frac{10}{3} \right)^2 \\ = \frac{10}{3} \: \times \: \frac{10}{3} \\ = \frac{10 \: \times \: 10}{3 \: \times \: 3}\\ = \frac{100}{9} \\ = \scriptsize 11 \frac{1}{9}\)

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