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JSS2: MATHEMATICS - 1ST TERM

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

To multiply a decimal number by the positive power of 10, move the decimal point by the number of times the power appears to the right e.g.

Example 1

Calculate the value of 

a. 2.3 x 106

b. 5.3467 x 102

c. 5.3467 x 101

d. 5.3467 x 103

Solution

a. 2.3 x 106

power of ten 2 e1606065986263

= 2,300,000

b. 5.3467 x 102

bques e1606066477911

=    534.67

c. 5.3467 x 101

cques e1606066564483

= 53.467

d. 5.3467 x 103

dquest e1606066609862

= 5346.7

2. Negative power of 10

To multiply a decimal number by a negative power of 10, move the decimal point by the number of times the power appears to the left.

Example 2

Evaluate the following

a. 2.3 x 10-6

b. 5.3467 x 10-1

c. 5.3467 x 10-2

d. 5.3467×10-3

Solution

a. 2.3 x 10-6

negative decimal point e1606108760394

= 0.0000023    

b. 5.3467 x 10-1

neg e1606109025798

= 0. 53467

c. 5.3467 x 10-2

neg2 e1606109077155

= 0. 053467

d. 5.3467×10-3

neg4 e1606109241559

= 0. 0053467

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