Math

Question 1

What is the formula for calculating percentage increase?

Answer 1

Percentage Increase = ((New Value - Original Value) / Original Value) * 100

Question 2

What is the formula for calculating percentage decrease?

Answer 2

Percentage Decrease = ((Original Value - New Value) / Original Value) * 100

Question 3

If a shirt originally costs $40 and is now $50, what is the percentage increase?

Answer 3

Percentage Increase = ((50 - 40) / 40) * 100 = 25%

Question 4

If a book was $30 and is now $24, what is the percentage decrease?

Answer 4

Percentage Decrease = ((30 - 24) / 30) * 100 = 20%

Question 5

True or False: A percentage increase can only be a positive number.

Answer 5

True

Question 6

Fill in the blank: A 10% increase means the new value is _____ of the original value.

Answer 6

110%

Question 7

What happens to a value if it is decreased by 100%?

Answer 7

The value becomes 0.

Question 8

If an item is marked down from $80 to $60, what is the percentage decrease?

Answer 8

Percentage Decrease = ((80 - 60) / 80) * 100 = 25%

Question 9

True or False: A percentage can be greater than 100%.

Answer 9

True

Question 10

What is the new value of an item that is increased by 50% from its original price of $200?

Answer 10

New Value = 200 + (50% of 200) = $300

Question 11

If a population of a town increases from 10,000 to 12,000, what is the percentage increase?

Answer 11

Percentage Increase = ((12,000 - 10,000) / 10,000) * 100 = 20%

Question 12

Calculate the new value if a $150 item is decreased by 30%.

Answer 12

New Value = 150 - (30% of 150) = $105

Question 13

Fill in the blank: A 25% decrease from 200 results in a new value of _____ .

Answer 13

150

Question 14

What do you call the original value before any percentage change?

Answer 14

The base value.

Question 15

If a car’s price is reduced from $20,000 to $15,000, what is the percentage decrease?

Answer 15

Percentage Decrease = ((20,000 - 15,000) / 20,000) * 100 = 25%

Question 16

True or False: A percentage increase can result in a value less than the original.

Answer 16

False

Question 17

What is 15% of $200?

Answer 17

$30

Question 18

If a student scores 80 on a test and improves to 92, what is the percentage increase in score?

Answer 18

Percentage Increase = ((92 - 80) / 80) * 100 = 15%

Question 19

What is the percentage decrease if a product’s price drops from $50 to $40?

Answer 19

Percentage Decrease = ((50 - 40) / 50) * 100 = 20%

Question 20

Fill in the blank: To calculate a percentage increase, you must find the _____ first.

Answer 20

difference between the new value and the original value

Question 21

What does a percentage change of 0% indicate?

Answer 21

No change in value.

Question 22

If the original value is $500 and it decreases by 10%, what is the new value?

Answer 22

$450

Question 23

If a store has a 20% off sale on a $60 item, how much do you save?

Answer 23

$12

Question 24

What is the effect of a 100% increase on a value?

Answer 24

The value doubles.

Question 25

If a product increases in price from $30 to $36, what is the percentage increase?

Answer 25

Percentage Increase = ((36 - 30) / 30) * 100 = 20%