# Prime Building Blocks

## Switch to our new maths teaching resources

Slide decks, worksheets, quizzes and lesson planning guidance designed for your classroom.

## Lesson details

### Key learning points

1. 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.

## Video

Share with pupils

## Worksheet

Share with pupils

## Starter quiz

Share with pupils

### 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
Correct answer: 7 x 7 x 7
Q3.
Which is larger?
2 to the power of 4
4 squared
Correct answer: Neither - they are equal
Q4.
Which is larger?
2 to the power of 5
Correct answer: 3 to the power of 4
Neither - they are equal
Q5.
Which of these could not be a value of b?
2
4
8

## Exit quiz

Share with pupils

### 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
Correct answer: 2 x 3 x 5
5 x 6
Q4.
Which of these is the prime factorisation of 50?
1 x 50
2 x 25
Correct answer: 2 x 5 x 5
5 x 10
Q5.
What is the final digit for this number:
1