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Year 8 Interactive Maths - Second Edition


Factors

A whole number that divides exactly into another whole number is called a factor of that other number.


So, 6 is a factor of 12 as it divides exactly into 12.


So, 2 is a factor of 12 as it divides exactly into 12.


Note:

If a number can be expressed as a product of two whole numbers, then the whole numbers are called factors of that number.


So, the factors of 12 are 1, 2, 3, 4, 6 and 12.


Example 17

List all the factors of 28.

Solution:

So, the factors of 28 are 1, 2, 4, 7, 14 and 28.


Note:


Example 18

Is 3 a factor 8?

Solution:


Example 19

Find all the factors of:

a.  8x
b.  5pq
c.  6p2

Solution:


Key Terms

factor


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