The product of 2 and 3 is; 2 x 3 = 6
2 and 3 are factors of 6
The factors of a number are numbers that divide the number without a remainder
EXAMPLE
Find the common factors of 24 and 36
24 = 1 x 24 36 = 1 x 36
= 2 x 12 = 2 x 18
= 3 x 8 = 3 x 12
= 4 x 6 = 4 x 9
= 6 x 6
Factors of 24 are: 1, 2, 3, 4, 6, 8, 12, 24
Factors of 36 are: 1, 2, 3, 4, 6, 9, 12, 18, 36
Common factors of 24 and 36 are: 1, 2, 3, 4, 6, 12
The highest common factor is 12.
EXERCISE
Find the HCF of:
- 6 and 9
- 6 and 27
- 21 and 14
- 12 and 18
- 6 and 21
- 6 and 15
- 24 and 60
- 18 and 30
- 14 and 16
- 6 and 10
See also
SQUARES AND SQUARE ROOTS OF NUMBERS
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