Percent increase and decrease

Multiple Choice

When you increase an amount by 10%, to find the new amount in one step, what should you multiply the original amount by?

• 0.1

• 10%

• 1.01

• 1.1

Multiple Choice

When you decrease an amount by 10%, to find the new amount in one step, what should you multiply the original amount by?

• 0.9

• 10%

• 0.09

• 1.1

Multiple Choice

When you decrease an amount by 25%, to find the new amount in one step, what should you multiply the original amount by?

• 0.25

• 25%

• 1.25

• 0.75

Multiple Choice

When you increase an amount by 25%, to find the new amount in one step, what should you multiply the original amount by?

• 0.25

• 25%

• 1.25

• 0.75

Fill in the Blanks

Increase $220 by 6%.

Fill in the Blanks

Decrease $2200 by 15%.

Fill in the Blanks

Increase $95 by 20%

Multiple Choice

A jacket is bought wholesale for $25. The shop marks up the price by 40%.

What is the selling price?

• $10

• $65

• $35

• $15

Multiple Choice

A scooter has a marked price of $237 and the store is discounting it by 15%.

What is the selling price?

• $35.55

• $272.55

• $222

• $201.45

Multiple Choice

Officeworks purchased a desk for $98, they want to mark it up by 70%. What will the selling price be?

                                                            

• $168

• $166.60

• $29.40

• $68.60

Multiple Choice

When you decrease an amount by 25%, to find the new amount in one step, what should you multiply the original amount by?

• 0.25

• 25%

• 1.25

• 0.75

Multiple Choice

Increase 400 by 25%

• 425

• 500

• 300

• 375

Multiple Choice

Decrease 800 by 25%

• 775

• 825

• 600

• 1000

Multiple Choice

Increase 36 by 10%

• 32.4

• 39.6

• 46

• 36.1

Multiple Choice

Decrease 360 by 20%

• 324

• 340

• 432

• 288

Multiple Choice

Decrease 220 by 5%

• 231

• 215

• 209

• 198

Multiple Select

Which of the following is the correct way to calculate a 20% increase on $85?

• Multiply $85 by 0.2 and add the result to $85.

• Multiply $85 by 0.8 and add the result to $85.

• Multiply $85 by 1.2.

• Multiply $85 by 0.2 and subtract the result from $85.