Percent Change
simple interest
Percent Error
Conversion
100

Find the Percent Change. State whether its and increase or decrease. Round to the nearest Percent. 

From 62 to 23

63% decrease

100

How much simple interest is owed on $5,000 is borrowed for 1 year at 5%?

*JUST THE INTEREST AMOUNT*

$250

100

Joshua uses his thermometer and finds the boiling point of water to be 75o C. He looks in a reference book and finds that the actual boiling point of water is 100oC. What is his percent error?

25%

100

Convert this fraction to a decimal:

4/5

0.8

200

Find the Percent Change. State whether its and increase or decrease. Round to the nearest Percent.


From 6 inches to 7 inches

17% Increase

200

Matthew deposited $900 into a certificate of deposit with a rate of 15% for 2 years. How much money did he have in the account after 2 years?

$1,170

200

A student estimated a mass to be 250 kg. After careful measurement, the mass weighed 240 kg. What is the Percent error? Round to the whole percent.

4%

200

Convert this decimal to a percent:

0.34

34%

300

Find the Percent Change. State whether its and increase or decrease. Round to the nearest Percent.


The price of a pair of shoes increases from $20 to $32.

60% Increase

300

Gina deposits $150 into college savings account that pays 4% simple interest at the end of each year. She did not touch the account and forgot about it for 50 years! How much total money will Gina earn on her deposits through the end of the 50 year?

$450

300

Steve has been training for a 5-mile race. Before the race, he predicts he will finish in 42 minutes. He actually finishes the race in 40 minutes. What is the percent error for his prediction?

5%

300

Convert this decimal to a percent:

1.09

109%

400

Find the Percent Change. State whether its and increase or decrease. Round to the nearest Percent.


A shirt was originally priced at $48. It went on sale for $38.40. What was the percent that the shirt was discounted?

20% decrease

400

You are starting your own small business in Nashville. You borrow $10,000 from the bank at a 9% rate for 5 years. Find the interest you will pay on this loan.

JUST THE INTEREST AMOUNT*

$4,500

400

When Destiny agreed to proofread her brother's essay, she expected that it would be 2 pages long. When he gave her the essay, it was actually 4.5 pages long. What is the percent error for her estimate? Round to the whole percent

56%

400

Convert this percent to a decimal:

2.14%

0.0214

500

Find the Percent Change. State whether its and increase or decrease. Round to the nearest Percent.


David moved from a house that is 89 miles away from his workplace to a house that is 51 miles away from his workplace. What is the percent decrease in the distance from his home to his workplace ?

43% Decrease

500

Kindall loaned Marissa $20,000 to buy a car at a simple interest rate of 3.1% for 5 years. How much does Marissa owe Kindall in total?

$23,100

500

A new roller coaster just opened at Friday Fun Park. When Lisa got in line, a sign said the wait from that point would be 45 minutes. The actual wait was only 35 minutes. What is the percent error for the park sign's estimate? Round to the whole percent

29%

500

Convert this fraction to a percent:

13/5

260%