Understanding Percentage Increase and Decrease

Increase 80 by 10%. What is the new value?

• 88

• 90

• 85

• 92

Decrease 70 by 10%. What is the new value?

• 60

• 63

• 65

• 67

Increase 40 by 50%. What is the new value?

• 50

• 55

• 60

• 70

Decrease 120 by 25%. What is the new value?

• 90

• 95

• 100

• 105

True or False: When 50 is increased by 20% the new value is 60.

• True

• False

True or False: If 200 is decreased by 30% the new value is 140.

• True

• False

A book originally costs £40. If the price is increased by 5%, what is the new price?

• £41

• £42

• £43

• £44

A jacket is on sale for 20% off its original price of £100. What is the sale price?

• £70

• £75

• £80

• £85