Prime Building Blocks
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Lesson details
Key learning points
- In this lesson, we will "build" numbers by considering their products and factors. We will also rewrite numbers as a product of factors in different ways.
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.
Evaluate the following:
2 x 2 x 2 x 2 x 2 x 2
6 + 6
6 x 2
Q2.
Evaluate the following:
3 x 3 x 3 x 3 x 3 x 3 x 3
7 + 7 + 7
7 x 3
Q3.
Which is larger?
2 to the power of 4
4 squared
Q4.
Which is larger?
2 to the power of 5
Neither - they are equal
Q5.
Which of these could not be a value of b?
2
4
8
5 Questions
Q1.
Which of these numbers is not prime?
13
2
31
Q2.
Which of these numbers is prime?
57
75
87
Q3.
Which of these is the prime factorisation of 30?
2 x 15
2 x 2 x 5
5 x 6
Q4.
Which of these is the prime factorisation of 50?
1 x 50
2 x 25
5 x 10
Q5.
What is the final digit for this number:
1
7
9