Percent to Decimal/Decimal to Percent
Convert 120% to a decimal.
1.2
A smoothie recipe calls for 1/2 cup of bananas to be blended with 1/4 cup of yogurt. How many cups of bananas are needed for 1 cup of yogurt?
2 cups of bananas
A fruit drink that was sold in 16-ounce containers is now sold in 20-ounce containers. What is the percent change? State whether this is an increase or a decrease.
25% increase
How much would a bicycle cost if it were marked down 15% from its original price of $289?
$245.65
The number of textbooks the school bought this year was 25% more than the number of books bought last school year. Last year, we bought 180 textbooks. How many were purchased this year?
225 textbooks
Convert 4.9% to a decimal.
.049
Angelina uses 2 ½ cups of flour to make 5 dozen cookies. Luke is going to make 6 dozen cookies. How much flour will he need?
3 cups of flour
On Tuesday, Nash made 231 free throws on Wednesday he made 258 free throws. What is the percent change in his free throws? Round to the nearest whole percent. State whether this is increase or decrease.
12% increase
If a sweater costs $37.99, and the sales tax is 6%, what is the total price of the sweater?
$40.27
Brianna sent 40 messages yesterday, and sent 20% less today. How many did she send today?
32
Convert .008 to a percent
0.8%
A sloth travels ⅓ meters in 1/10 minute. What is the sloth’s running speed (in meters per minute)?
10/3 meters per minute OR
3 1/3 meters per minute
Al's Quick Mart sells milk for $1.99 per gallon, but they used to sell it for $2.79. What is the percent change in the price? Round to the nearest whole percent. State whether this is increase or decrease.
40% decrease
A container of mouthwash usually costs $2.99 at a store. If it is on sale for 20% off, how much does the mouthwash cost now?
$2.39
Steve ate 40% more cookies than Randy. If Randy had 5 cookies, how many did Steve eat?
7 cookies
Convert 3.1 to a percent
310%
Sarah has a recipe for brownies. She uses 4 ½ cups of sugar to make 3 batches. Marcus will follow the same recipe. He will make b batches using c cups of sugar. What is an equation that represents the relationship between c and b?
c = 3/2 b
c = 1 1/2 b
Bobby estimates a computer at an electronics store is $1,099. Determine the percent of error in price if the actual price is $1,349. Round to the nearest whole percent.
19% error
Elvia can get a 15% discount on a $68.53 purchase at a certain department store because she works there. She will need to pay 7% tax. What is the final price she will pay?
$62.33
The average temperature in January is 65% lower than the average temperature in July, which is 72.1 degrees. What is the average temperature in January? (round to the nearest whole number)
25 degrees
Convert 0.07% to a decimal
.0007
A trail mix uses 3½ boxes of raisins and 6 bags of m&ms. If someone wants to make a larger mix that tastes the same, using r boxes of raisings and m bags of m&ms. What is an equation that represents the relationship between m and r?
m = 12/7 r OR
r = 7/12 m
Noah estimates the mass of an object to be 325g. The actual mass is 342g. What is the percent error of his calculation?
5% error
60%