You may use a calculator for all of the questions in this quiz.

Find the multiplier values for the following percentages.

1) Increase by 20%

2) Increase by 40%

3) Increase by 92%

4) Increase by 18%

5) Increase by 3%

6) Increase by 0.5%

7) Decrease by 70%

8) Decrease by 39%

9) Decrease by 14%

10) Decrease by 2.3%

**Part A**Find the multiplier values for the following percentages.

1) Increase by 20%

2) Increase by 40%

3) Increase by 92%

4) Increase by 18%

5) Increase by 3%

6) Increase by 0.5%

7) Decrease by 70%

8) Decrease by 39%

9) Decrease by 14%

10) Decrease by 2.3%

**Part B**

Give all of your answers for the questions below to one decimal place.

1) Increase 359 by 48%

2) Increase 1,843 by 92.5%

3) Decrease 35,982 by 22%

4) Decrease 14.32 by 42%

5) Increase 84 by 14.7%

6) Decrease 100,238.1 by 77.9%

7) Increase 872,231 by 2.5%

8) Decrease 62,812 by 0.03%

**Part C**

1) A coat costs £65. During a sale, the price of the coat decreases by 27%. What is the price of the coat in the sale?

2) I purchased a house 3 years ago for 196,800. Over the 3 years that I have owned the house, it has increased in value by 7.8%. What is the value of the house now?

3) A year ago, I purchased a car for £9,800. Since then, the car has decreased in value by 23.9%. What is the value of the car now?

4) I am looking to purchase a new laptop. Two shops are selling the laptop and they both have a sale.

- The laptop at shop A has a normal price of £489 and there is 17% off.
- The laptop at shop B has a normal price £515 and there is 21.2% off.