Behavioural Objectives: At the end of the lesson, the pupils should be able to:

- Write out factors of numbers.
- Identify factors common to numbers.
- Find out the Highest Common factors of numbers. Highest Common Factors of Numbers

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Example 1

Find the H.C.F of 6 & 8.

Solution

Factors of 6 are: (1), (2), 3, 6.

Factors of 8 are: (1), (2), 4, 8.

Common factor of 6 & 8 are 1 & 2.

Highest Common factor of 6 & 8 is 2.`Example 2.`

Find the H.C.F of 4, 20 and 60.

Solution.

Factors of 4 are: (1), (2), (4).

Factors of 20 are: (1), (2), (4), 5, 10, 20.

Factors of 60 are: (1), (2), 3, (4), 5, 6, 10, 12, 15, 20, 30, 60.

.’.Highest Common Factor are 4, 20, 60, is 4.

Exercises

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Man Primary Mathematics book 4 page 140 exercise C question 2 a-e.

Send your answer to this number 07089083533 (Whatsapp Only). Thanks

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