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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:

  • Addition of Decimals
  • Subtraction of Decimals

Additions and subtractions of decimals are carried out exactly in the same manner as whole numbers. However, you need to be very careful to set out your work correctly. Units must be under units, decimal points under decimal points, and so on.

Addition of Decimals:

Example:

0.2  +  0.6

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Example 9.1.1:

Find the value of the following:

i) 18.5   +  32.5
ii) 4.38   +  1.56   + 23.781  
iii) 0.86   +  45   +  231.9  
iv) Find the sum of ₦24.90, ₦10.59 and ₦125.55

 

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