Fractions and percentages represent part of a whole number. They can be used to increase or decrease a value by a given proportion.

I spend \(\frac {2} {5}\) of my allowance of £70 on clothes. How much money do I have left?

£14

£42

£28

What is 45% of 135 ml?

60.75 ml

45 ml

74.25 ml

A farm owns three pigs, four cows and two sheep. What percentage of the animals are cows, to the nearest whole number?

40%

80%

44%

20 girls and 30 boys go on a school trip. What fraction are girls?

Express your answer in the simplest form.

\[\frac {2} {3}\]

\[\frac {2} {5}\]

\[\frac {3} {5}\]

Anya donates £12 to charity. This is \(\frac {4} {7}\) of the money in her purse. How much does she have left?

£3

£9

£21

I use 20% of a bag of flour to make a cake that requires 140 g of flour. How heavy was the bag originally?

560 g

580 g

700 g

Crimp ‘n’ Curl charges a basic rate for haircuts, which increases by 15% to include styling to give a total of £30. How much does a basic haircut cost, to the nearest pound?

£26

£25

£24

Gas prices fall by 12%. If a person’s monthly payment is now £78.50, what was it before the price dropped?

£87.92

£89.20

£69.08

What is the value when you increase 40 by 2%, using multipliers?

40.8

39.2

48

Melissa is 65% hydrated at midday. By 5.00pm, her hydration has decreased by 2.5% of her hydration at midday. Using multipliers, calculate how hydrated she is now.

63.375%

62.5%

66.625%