Increase and Decrease Percentages with Variables

Write down the multiplier used to calculate a 15% increase.

• 15

• 1.5

• 1.15

• 1.015

What multiplier represents a 32.4% increase? (pick 2)

• 32.4%

• 1324%

• 1.324%

• 1.324

• 132.4%

What multiplier represents a 10% decrease?

• 10%

• 90%

• 110%

• 1.10

Write down the multiplier used to calculate a 45% decrease.

• 0.45

• 0.55

• 45

• 55

Decrease £220 by 20%.

• £170

• £176

• £200

• £44

Decrease 712kg by 24%

Increase 7900 by 37.4%

Oliverʼs salary is £18,000 and he is due to get an increase of 4%. How much will his new salary be?

A new TV is priced at £320

In a sale it is reduced by 45%. What is the sale price?

Joanne sees this special offer in a shop and buys both items. How much does she pay?