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Welcome to this
Online Lesson
TRS’ NAME: ASHABA FREDRICK
CONTACT: 0757805368
WORKING WITH INTEGERS
IDENTIFY EVEN, ODD, PRIME AND
COMPOSITE NUMBERS
Activity
Copy and complete the table below by choosing among the numbers given which one is
odd, even, prime or composite.
Number Odd Even Prime Composite
1 1
2 2 2
3
4 4
5 5
6
7
Question1
Are there numbers that belong to more than one group?
Question 2
How do you identify that a number is:
i. Odd
ii. Even
iii. Prime
iv. composite
Finding prime factors of any number
In your primary you studied about multiples and factors of numbers.
When to numbers are multiplied together, the product is called a multiple.
The two numbers multiplied together are called factors of a multiple
A multiple has two or more factors
Example
The factors of 12 are
1 × 12 = 12
2 × 6 = 12
3 × 4 = 12
Factors of 12 are 1,2,3,4,6,12
The multiples of 4 are
4 × 1 = 4
4 × 2 = 8
4 × 3 = 12
4 × 4 = 16
4 × 5 = 20
4 × 2 = 24
The multiples of 4 are 4,8,12,16,20,24, …
Exercise
Find the factors of the following numbers
1. 42
2. 56
3. 36
4. 108
Prime factors
Write 36 as a product of its prime factors
Prime factor Number
2 36
2
3
3
18
9
3
1
36 = 2 × 2 × 3 × 3
This method of determining prime numbers is called prime
factorization.
Exercise
Find the prime factors of the following numbers
1. 108
2. 64
3. 288
4. 2145
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S1 working with integers

  • 1. Welcome to this Online Lesson TRS’ NAME: ASHABA FREDRICK CONTACT: 0757805368
  • 2. WORKING WITH INTEGERS IDENTIFY EVEN, ODD, PRIME AND COMPOSITE NUMBERS
  • 3. Activity Copy and complete the table below by choosing among the numbers given which one is odd, even, prime or composite. Number Odd Even Prime Composite 1 1 2 2 2 3 4 4 5 5 6 7
  • 4. Question1 Are there numbers that belong to more than one group? Question 2 How do you identify that a number is: i. Odd ii. Even iii. Prime iv. composite
  • 5. Finding prime factors of any number In your primary you studied about multiples and factors of numbers. When to numbers are multiplied together, the product is called a multiple. The two numbers multiplied together are called factors of a multiple A multiple has two or more factors
  • 6. Example The factors of 12 are 1 × 12 = 12 2 × 6 = 12 3 × 4 = 12 Factors of 12 are 1,2,3,4,6,12 The multiples of 4 are 4 × 1 = 4 4 × 2 = 8 4 × 3 = 12 4 × 4 = 16 4 × 5 = 20 4 × 2 = 24 The multiples of 4 are 4,8,12,16,20,24, …
  • 7. Exercise Find the factors of the following numbers 1. 42 2. 56 3. 36 4. 108
  • 8. Prime factors Write 36 as a product of its prime factors Prime factor Number 2 36 2 3 3 18 9 3 1 36 = 2 × 2 × 3 × 3 This method of determining prime numbers is called prime factorization.
  • 9. Exercise Find the prime factors of the following numbers 1. 108 2. 64 3. 288 4. 2145
  • 10. SERVICES PRICES Online Classes 500,000 This includes Tr-Student Interaction by holding class engagements, access to courses/subjects on the website yaaka.cc, marking and grading of assignments, quizzes for a full year. Downloads in UGX A Single Subject 10,000 All Subjects per Class in Primary 30,000 All Subjects per class in Secondary 50,000 Access Yaaka through https://www.yaaka.cc/ Access Educare through