#### Question 1

For the above, work backwards. So for example, 250-75 = 175. Etc

4/10

## Difficulty Rating

5/10

#### Question 3

a) i) 1/3

3/9 = 1/3

c) 50

10% of 500 = 50.

10/100 * 500

d) £127.50

85/100 * 150

Above formula to calculate 15% reduction

## Difficulty Rating

6/10

#### Question 4

a) Twenty-thousand four hundred

b) -21

A + * by a – is always a –

c) 27

BIDMAS. Brackets first

d) 8

y=16/2 = 8

e)i) x = 7

e)ii) x = 5

You firstly have -x = -5 which is the same as x = 5

f) 6

g) 1:3

## Difficulty Rating

8/10

#### Question 5

Golden rule here is that whatever you do to the numerator, you do the denominator.

So if the numerator doubles, the denominator doubles and visa versa. To keep the fraction the same

3/10

4/10

4/10

6/10

7/10

5/10

4/10

5/10

4/10

## Difficulty Rating

4/10

#### Question 15

2/3

Red = 10/30 = 1/3

Green = 20/30 = 2/3

## Difficulty Rating

3/10

#### Question 16

a) 5

Mode is the most common/frequent number in the sequence

b) 5

Mean is the average of all of the numbers once added together. Total/Number of numbers

So 50/10

## Difficulty Rating

4/10

#### Question 17

3/10 or 0.3

3 green/ total number of crayons

## Difficulty Rating

4/10

#### Question 18

c

5 hour walk at 3km/h = 15km

5 hour walk at 4 km/h = 20km

So distance could only be 19km

## Difficulty Rating

3/10

#### Question 19

a) 14

b) Bus

c) 41

Bicycle 9; Bus 2; Car 14; Lorry 6; Motorbike 3; Van 7

2/10

a) 5

b) 3

(2×3)/2

c) 22

(3×6)+(2*2)

Substitution

5/10