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Lesson details
Key learning points
- In this lesson, we will revisit factors and learn about highest common factors.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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5 Questions
Q1.
75 = 15 x .....
15
25
3
Q2.
168 = ..... x 21
14
42
6
Q3.
Which of these is not a factor of 42?
14
21
6
Q4.
One of the factors of 168 is a square number.
False
Q5.
Which two numbers will multiply to make a square number?
245 and 30
30 and 42
72 and 245
6 Questions
Q1.
Which of these is not a factor of 27?
1
27
9
Q2.
Which is not a factor of 54?
27
6
9
Q3.
Which is a common factor of 28 and 36?
12
6
7
Q4.
What is the highest common factor of 6 and 9?
1
54
6
Q5.
What is the HCF of 30 and 42?
12
4
Q6.
True or False? If the HCF is 12, then 4 and 3 are common factors.
False