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JSS3: MATHEMATICS - 2ND TERM

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  1. Trigonometry I | Week 1
    3 Topics
    |
    1 Quiz
  2. Trigonometry II | Week 2
    4 Topics
    |
    1 Quiz
  3. Trigonometry III | Week 3
    5 Topics
    |
    1 Quiz
  4. Similarity I | Week 4
    3 Topics
    |
    1 Quiz
  5. Similarity II | Week 5
    3 Topics
    |
    1 Quiz
  6. Similarity III | Week 6
    2 Topics
    |
    1 Quiz
  7. Similarity IV | Week 7
    2 Topics
    |
    1 Quiz
  8. Variation I | Week 8
    3 Topics
    |
    1 Quiz
  9. Variation II | Week 9
    2 Topics
    |
    1 Quiz
  10. Calculations Involving Standard Form | Week 10
    4 Topics
    |
    1 Quiz
  11. Compound Interest | Week 11
    4 Topics
    |
    1 Quiz



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A number is said to be in standard form if the number is expressed in the form 

A × 10n 

Where A is a number between 1 and 10. 

This is often written as 1 < A < 10 n is an integer (Positive or Negative)

In standard form, power of 10 (i.e. 10n) is often used. 

Examples of positive powers of 10 are:

1 = 100 

100 = 102 

1000 = 103 etc.

Examples of negative powers of 10 

10-1 = \( \frac{1}{10} \scriptsize \: or \: 0.1 \)

10-2  = \( \frac{1}{100} \scriptsize \: or \: 0.01 \)

10-3  =\( \normalsize \frac{1}{1000} \scriptsize \: or \: \normalsize \frac{1}{10^3} \scriptsize = 0.001 \)

Hence 3500000 can be written in standard form as 3.5 × 106

Screen Shot 2021 03 08 at 10.09.23 AM

Similarly, the number 0.00000067 can be written as 6.7 × 10-7 

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