1. n green bottles hanging on a wall...
and if one green bottle should accidently fall...

2. green bottles hanging on a wall
There'll be
n - 1
green bottles hanging on a wall

3. There are n pupils in this class
What can
n + 4 pupils
mean?

4. There are p players in this team
What can
p - 3 players
mean?

5. There are d ducks in the pond
What can
d - 2 ducks
mean?
What can
2d ducks
mean?

6. Answer the questions from activity 1 in your booklet.

7. I buy 2 items that cost £a each.
I pay with a £10 note.
How much change do I get?
If it’s tricky, draw a piccy!
£10
change £a £a

8. So, the amount of change can be expressed as:
10 – a x 2
Omit the x and the expression becomes
10 – 2a
£10
change £a £a

9. Answer the questions from activity 2 in your booklet.

11. Answer the questions from activity 3 in your booklet.

12. What would be an expression for
How do you find the volume of a cube?
What would be an expression for
the volume of this cube?
a x a x a = a3

13. b × 4 × b = 4b2
Answer the questions from activity 4 in your booklet.

15. On your whiteboards, can you write an expression for this situation?
Can you write another one?
Write an expression to match each diagram