Problem Solving with

Decimals10 Challenges

(WHITE)

John went to Lowes and purchased one orange juice and one apple juice for a total of $5.64. He has to pay tax. The tax is 7 cents on the dollar or 7%.

• What did John pay the cashier in total?

• If the price of the orange juice was $2.36, what was the difference in price between the orange juice and apple juice?

(BLUE)Kiera cut a piece of ribbon into two parts. The first piece was 17.3 inches long. The second piece was 5.6 inches less. • What was the total length of the ribbon? • If she had cut the ribbon into 3 equal parts, what would have been the

measure of each part?

(GREEN)

It’s Christmas and ties are on sale at Jenk’s Department Store . Each tie costs $14.99. Howard purchased three ties and had to pay 7% tax. He gave the cashier $50.

• How much tax did Howard have to pay?

• How much change did the cashier give back to Howard?

(YELLOW)

Jenna purchased a 24.5 ounce bottle of syrup for Saturday morning breakfast. After four people used equal amounts of syrup, there were 11.7 ounces left.

• How many ounces did each person use?

• If each person had 4 pancakes, how much syrup was used per pancake?

(PURPLE)

While walking in the Triangle “Walk for Heart” race, Laura averaged 3.63 miles per hour.

• How far did she walk in 1.5 hours?

• If she kept up this pace, to the nearest TENTH, how long would it take her to walk a marathon? (26.2 miles is a marathon)

• How many exact hours and minutes will this take her?

(RED)

Mitchell walked 8.5 laps at a rate of 2.4 minutes per lap.

• How long was his entire walk? (Tell this in minutes and seconds)

• If Mitchell could increase his walking rate by 10%, how long would his walk take then? (Round to nearest tenth and tell this in minutes and seconds)

• How much faster would this be from his original time?

(BROWN) Cheryl bought 5 pairs of jeans. The clearance bar had Lee’s Jeans priced at 2 for $25.00. Levi’s were 3 for $32.00. Vanderbilt Jeans were not on sale. They were $28.99 per pair.

Cheryl bought 2 pair of Lee’s, 2 pair of Levi’s and 1 pair of Vanderbilt.

• How much was her total before tax?

• She lucked out! This was a tax free weekend. But she did want to donate 5% of her total to the food bank at the counter. When she figured this out, she rounded to the nearest dollar. How much did she donate?

(GRAY)

Joe ran a 5 mile race in 35.25 minutes. The winner was clocked at running a 6 minute mile.

• If Joe ran at a constant rate, how long did it take Joe to run one mile?

• What was the difference in Joe’s rate per mile and the winner?

(PINK)

Maggie bought 1.5 lbs of chicken for $6.54, 2 lbs. of grapes for $2.38/pound and .75 lbs of cashews for $8.95

• What is the cost per pound of chicken?

• What is the cost per pound of grapes?

• What is the cost per pound for the cashews?

• She had $40.00. She estimates that she has plenty of money to buy more cashews. About how many more lbs. of cashews can she buy?

(AQUA)

Carl drove 178.71 miles in 3 hours.

• What was Carl’s rate in miles per hour to the nearest whole number?

• If Carl’s car gets 25 miles/gallon, how many gallons of gas did he use to the nearest tenth?

• His car holds 16 gallons. About how many more miles can he go with the gallons he has left?