Proportions
Percents
Simple Interest
Percent and Rounding Error
Percent increase
100

This is the value of x if 1/4=x/24

What is 6.

100

50% of 6 is this number.

What is 3?

100

If I invest $600 at an interest rate of 10% for 2 years, this is the amount of interest I collect.

What is $120?

100

If my walk can be rounded up to 3 miles, this is the minimum distance of my walk.

What is 2.5mi?

100

I made $60 in tips on Sunday night.  If I make $47 in tips on Monday. is this percent increase of percent decrease?

What is percent decrease?

200

This is the value of b if (b+2)/10=4/5.

What is b=6?

200

Find x if x% of 40 is 36.

What is 150?

200

If I invest $1,200 at an interest rate of 5%, this is my ending balance after 6 years.

What is 15600?

200

If my hair is 20 inches to the nearest inch, these are the maximum and minimum lengths of my hair.

What are 19.5 and 20.49 inches?

200

At week 1, a plant was 4 inches tall.  At week 3, it was 7 inches tall.  This is the percent increase.

What is 75%?

300

This is the value of x if (x-9)/12=(x+4)/64

What is x=12?

300

This is the value of x if 15 is 10% of x.

What is 150?

300

I take out a $24000 loan for college tuition.  If my interest rate is 6% and I plan on paying it back in 3 years, this is how much money I must pay to settle the loan.

What is $28320?

300

I estimate that I will make 10 baskets with 12 shots.  I make 11 baskets.  This is my percent error.

What is 10%?

300

If you get an 80 on your first test and a 88 on your next test, this is the percent change (specify increase or decrease)?

What is increase of 10%?

400

If you can buy a pumpkin for $12 at a farm stand, this is how many pumpkins you can buy for the town fair with a budget of $168.

What is 14 pumpkins?

400

At the top of Guinevere's test, it says she got 70/80 points on a test.  What is her score as a percent? 

What is 87.5%?

400

This is the amount of years it takes my $9000 investment to grow to $20000 if the interest rate is 5%.

What is 24.5 years?

400

I expect a bag of 20 M&Ms to have 5 browns.  My bag contains 6.  This is my percent error.

What is 20%?

400
This is the percent change (specify increase or decrease) if your hourly rate changes from $12/hr to $15/hr.

What is 25% increase?

500

The current exchange rate from USD to Euros is that 1€  is $1.16.  If you exchange 123€ for dollars, this is the amount, in USD, you will get back.

What is $142.68?

500

What is x if x is 150% of 36?

What is 54?

500

This is how much money I need to invest if I want an ending balance of $2000 in my account after 4 years at an interest rate of 2%.

What is $1851.85?

500

I estimate my height at 62 inches, however I am actually 61 inches.  This is my percent error.

What is 1.6%?

500

A school tracks absences to see if more students are absent on Mondays than on Tuesdays.  If there are 65 students absent on Monday and 56 students absent on Tuesday this is the percent change (specify increase or decrease) of student absences.

What is decrease of 13.8%?