1. 1 2 3 4 5 6 7 8 9 10 11 12

2. 12 n A cake weighing 12 kg is cut into n equal pieces.
How much does each piece weigh? 12 n

3. n + 8 2(n + 8) A pencil costs n pence.
A ruler costs 8p more than a pencil.
1. How much does a ruler cost?
2. How much do 2 rulers cost?
n + 8
2(n + 8)

4. 56x xy A coach has 56 seats. 1. How many seats are there on x coaches?
A coach has y seats.
2. How many seats are there on x coaches? xy

5. 90 n + 1 A prize of £90 is shared between you and n other friends.
How much does each person receive? 90
n + 1

6. x + y 65x + 80y = T I buy x lollies at 65p each and
y lollies at 80p each
1. How many lollies do I buy altogether?
x + y
2. Write a formula for the total cost, T.
65x + 80y = T

7. 4(n + 2) = T A box contains n chocolates.
The shopkeeper puts an extra 2 chocolates into each box. A girl buys 4 boxes.
Write a formula for the total number, T of chocolates she has?
4(n + 2) = T

8. A cookery book gives the following rule to roast a chicken.
Total Time = 40 minutes per kg plus 25 minutes
Write a formula for the time needed to roast a chicken using this rule.
(Use x for weight in kg and T for time in minutes.)
40x + 25 = T

9. xy T = 5 - xy Kyra has £5 to spend. She buys x pens at y pence each.
1. Write an expression for the total amount she spends. xy
2. Write a formula for the amount of change she receives. Use T for her total change.
T = 5 - xy

10. 75x + 12y In a café a cup of tea cost 75p and a biscuit costs 12p?
How much does x cups of tea and y biscuits cost?
75x + 12y

11. A tool hire firm charges £20 to hire a cement mixer for 1 day and £9 for every extra day.
Write a formula for the total cost, T to hire a cement mixer for x days.
T = 9(x – 1) + 20

12. 6(n + 25) Ashley earns £n per week.
She has a pay rise of £25 per week?
How much does she now earn in 6 weeks?
6(n + 25)

13. 20x - 45 Sean and Dean organise a quiz evening.
A quiz team is made up of four people.
Each team is charged £8 to enter.
They spend £20 on prizes and £25 on refreshments.
There are x teams at the quiz.
On average, each member spends £3 on refreshments.
Write down an expression in x for the profit they make.
20x - 45