Express A Number as A Product of its Factors

Class: Primary 4. Subject:

Mathematics

Topic: FACTORS OF NUMBER

Pupil’s Activities 1 – Express
Number as A Product of Two
Numbers

Sample – Quantitative Reasoning
1 = 1 x 1
2 = 1 x 2, 2 x 1
3 = 1 x 3, 3 x 1
4 = 1 x 4, 4 x 1, 2 x 2
6 = 1 x 6, 6 x 1, 2 x 3, 3 x 2

 

Express the number – 5, 7, 8, 9 and
10 as product of two numbers.
Expected response
1) . 5 = 1 x 5, 5 x 1

2.) 7 = 1 x 7, 7 x 1

3.) 8 = 1 x 8, 8 x 1, 4 x 2, 2 x
4

4) . 9 = 1 x 9, 9 x 1, 3 x 3

5.) 10 = 1 x 10, 10 x 1, 2 x 5,
5 x 2

Teacher’s remark – Each digit of the
product of a number is a factor that
number. For example, 1 and 5 are
factors of 5 without repeating any
number. Also, 1, 2, 4 and 8 are the
products of 8, 1, 2, 5, and 10 are
factors of 10.

 

Pupil’s Activities 2 –

 

Exercises/Take Home
Find the factors of
1. 11
2. 12
3. 13
4. 14
5. 15