1. Literacy Research Memory Skill Practice Stretch
To calculate a percentage change:
Original x multiplier = new
Percentage
Percentage change
Multiplier
Increase/decrease
What is compound interest?
What is compound interest commonly used for?
Skill Practice
Nina earns £4.50 per hour. Her wage then increases by 2%. Three months later she receives a further wage increase of 3%. How much does Nina earn now per hour?
A TV costs £199. It is reduced by 5% in a sale. It is then reduced by a further 10%. How much does the TV cost now?
Paul has shares worth £300 in Resco. In January his shares increase by 4%. In February the shares dip by 7%. What is the worth of Pauls’ shares at the end of February?
The population of a town in 1995 was The population increased by 12% from 1995 to 2005 and then decreased by 3% from 2005 to What was the population in 2015?
Vernon buys a car for £ Each year the value of the car decreases by 10%. How much will the car be worth in 3 years time?
The number of road accidents in a county is increasing by 5% per year. This year there were 236 accidents. If this trend continues, how many accidents will there be in 2 years’ time?
Stretch
The cost of a mobile phone decreased by 5% and then decreased by a further 3%. Work out the overall percentage decrease
The cost of a train ticket increased by 10% and then increased by a further 2%. Work out the overall percentage increase.
The value of shares decreased by 4% but then increased by 6%. Work out the overall percentage change.