Percentage Increases & Decreases - Multiplier Method

This lesson covers:

  1. How to increase or decrease values by a given percentage
  2. E.g. 'Increase 30 by 50%'

30% is equivalent to:

0.03

3

30

0.3

0

/

1

Increase £200 by 30%

260

£

£

0

/

1

The price of a computer is £900. In a sale the price is decreased by 25%.


Work out the price of the computer in the sale. 

675

£

£

0

/

1

Increase 200 by 45%

290

0

/

1

Increase £25 by 50%. Give your answer to 2 decimal places.

37.50

£

£

0

/

1

Decrease £80 by 16%

67.20

£

£

0

/

1

Increase 40 g by 15%

46

g

g

0

/

1

Decrease 120 g by 40%

72

g

g

0

/

1