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JSS3: MATHEMATICS - 1ST TERM

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  1. Binary Number System I | Week 1
    5 Topics
    |
    1 Quiz
  2. Binary Number System II | Week 2
    6 Topics
    |
    1 Quiz
  3. Word Problems I | Week 3
    4 Topics
    |
    1 Quiz
  4. Word Problems with Fractions II | Week 4
    1 Topic
    |
    1 Quiz
  5. Factorization I | Week 5
    4 Topics
    |
    1 Quiz
  6. Factorization II | Week 6
    3 Topics
    |
    1 Quiz
  7. Factorization III | Week 7
    3 Topics
    |
    1 Quiz
  8. Substitution & Change of Subject of Formulae | Week 8
    2 Topics
    |
    1 Quiz
  9. Simple Equations Involving Fractions | Week 9
    3 Topics
    |
    1 Quiz
  10. Word Problems | Week 10
    1 Topic
    |
    1 Quiz



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Topic Content:

  • Binary Arithmetic Operations – Multiplication

Multiplication in binary is exactly as it is in decimal.

The four major steps in binary digit multiplication are:

0 × 0 = 0
0 × 1 = 0
1 × 0 = 0
1 × 1 = 1 (No borrow or carry method is applicable here)

Worked Example 2.4.1:

Solve the following:

a. Find the product of 1101two and 111two
b. Multiply 11.01two by 1.1two
c. 111two × 110two
d. 111two  × 111two
e. 11101two × 110two

Solution

a. Find the product of 1101two and 111two

Screenshot 2023 09 09 at 06.37.33

Explanation on addition

1st Column (from right to left) = 1 + 0 = 1. 1 is less than 2, We write down 1.

2nd Column = 0 + 1 = 1. We write down 1.

3rd Column = 1 + 0 + 1 = 2. How many twos are there in 2? \( \frac{2}{2} \) = 1 remainder 0. Write 0 and carry 1 to column 4.

 

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