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JSS1: MATHEMATICS - 1ST TERM

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  1. Whole Numbers I | Week 1
    3 Topics
    |
    1 Quiz
  2. Whole Numbers II | Week 2
    1 Topic
    |
    1 Quiz
  3. Counting in Base Two | Week 3
    4 Topics
    |
    1 Quiz
  4. Arithmetic Operations | Week 4
    3 Topics
    |
    1 Quiz
  5. Lowest Common Multiple (LCM) | Week 5
    2 Topics
    |
    1 Quiz
  6. Highest Common Factor | Week 6
    1 Topic
    |
    1 Quiz
  7. Fraction | Week 7
    7 Topics
    |
    1 Quiz
  8. Basic Operations with Fractions I | Week 8
    3 Topics
    |
    1 Quiz
  9. Basic Operations with Fractions II | Week 9
    1 Topic
    |
    1 Quiz
  10. Directed Numbers | Week 10
    3 Topics
    |
    1 Quiz
  11. Estimation and Approximation I | Week 11
    3 Topics
    |
    1 Quiz
  12. Estimation and Approximation II | Week 12
    6 Topics
    |
    1 Quiz



Lesson Progress
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Topic Content:

  • Rules of Binary Subtraction
  • Worked Examples

Below are rules of binary subtraction:

0 – 0 = 0
1 – 0 = 1 
1 – 1 = 0
10 – 1 = 1 
11 – 1 = 10 

Worked Example 4.2.1:

Subtract 

a. 1011two from 10101two 
b. 111010two – 11011two 

a. 1011two from 10101two 

Screenshot 2023 08 18 at 15.38.29

Note: First column by the right 1 – 1 = 0 

 

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