Percent Change and Simple Interest

Timmi puts $300 in a bank account earning 4% interest.  How much will she earn in interest in 1 year?

• 4

• 8

• 12

• 16

Jessica borrowed $500 from a bank for 2 years and was charged simple interest. The total interest that she paid on the loan was $70. As a percentage, what was the annual interest rate of her loan?

Match the following

• time (t)

• 2

• Interest (I)

• 500

• Principle (P)

• Unknown

• rate (r)

• 70

Felipe invested in a savings bond for 6 years and was paid simple interest at an annual rate of 3%. The total interest that he earned was $540. How much did he invest?

Mathematical Equivalence

ON

Carlos took a test and made a 50. On the next test, he made a 75. What was the percent of change between the two test scores?

• 50% increase

• 50% decrease

• 25% increase

• 25% decrease

In a class, the number of students has been decreased from 27 to 18. Find the percent of change.

• 33.33% decrease

• 33.33% increase

• 50% decrease

• 50% increase

Find the PERCENT of Change.

The original cost was $50 and the new cost is $60.

• Increase 20%

• Increase 16.67%

• Increase $10

• Decrease $10

Last week, you finished level 2 of a video game in 32 minutes. Today, you finished level 2 in 28 minutes. What is your percent of change?

• Increase 12.5%

• Decrease 12.5%

• Increase 4%

• Decrease 4%

Find the new amount:

500 bugs increased by 20%

• 25 bugs

• 600 bugs

• 700 bugs

• 60 bugs

Find the percent change:

$100 to $120

• 20% increase

• 2% increase

• 1.2% increase

• 25% increase

Find the percent change:

$35 to $45

• 10% increase

• 5% increase

• 17% increase

• 29% increase