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JSS1: MATHEMATICS - 2ND TERM

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  1. Algebraic Processes | Week 1
    4 Topics
    |
    1 Quiz
  2. Simplification of Algebraic Expressions | Week 2
    4 Topics
    |
    1 Quiz
  3. Simplification of Algebraic Expressions 2 (Use of Brackets) | Week 3
    4 Topics
    |
    1 Quiz
  4. Simple Equations | Week 4
    1 Topic
    |
    1 Quiz
  5. Simple Equations II | Week 5
    3 Topics
    |
    1 Quiz
  6. Plane Shapes I | Week 6
    5 Topics
    |
    2 Quizzes
  7. Plane Shapes II | Week 7
    7 Topics
    |
    1 Quiz
  8. Plane Shapes III | Week 8
    7 Topics
    |
    1 Quiz
  9. Decimals and Percentages I | Week 9
    2 Topics
    |
    1 Quiz
  10. Decimals and Percentages II | Week 10
    3 Topics
    |
    1 Quiz



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Topic Content:

  • Substitution into an Algebraic Expression

Substitution into an algebraic expression is the process of replacing a letter with a number, in a given algebraic expression. The letters are called variables because they can be replaced by any value.

Example 2.4.1:

If  x =  2  and y  =  3    

Find the following:

i. \( \scriptsize x \: + \: 6 \)
ii. \( \scriptsize 4 \: + \: x \: + \: y \)
iii. \( \scriptsize y \: – \: x \)
iv. \( \scriptsize 10 \: – \: 2y \: – \: 3 \)

Solution

i. \( \scriptsize x + 6 \\ = \scriptsize 2 + 6 \\ = \scriptsize 8 \)

 

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