Name
Date
Class
Unit REVIEW
1. Solve the following computations. Show your work.
a. 9.57 + 41.706
b. 7.48 – 2.014
c. 23.6 × 3.3
d. 29.4 ÷ 0.7
2. Ben and his family love chicken wings! Ben pays $2.75 per pound for them at Wings-A-Plenty. In the
last month, he bought wings 4 times. He purchased 12.068 pounds the first visit, 13.975 pounds on the
second visit, 14.345 pounds the third time, and 15.226 pounds on his final visit.
a. How many pounds of wings did Ben purchase altogether? Explain your reasoning.
b. What was the total cost for chicken wings this last month? Explain your reasoning.
c. Out of curiosity, Ben asked the manager at Wings-A-Plenty how many pounds of wings they’d sold
this month. The manager told him that, at the start of this month, the total for the year was
32,721.1 pounds. He also told Ben that, as of today, the total amount sold for the year is 34,614.9
pounds. How many pounds has Wings-A-Plenty sold so far this month? Explain.
1
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Name
Date
Class
Decimal Ops
Unit REVIEW (continued)
3. Video Games Galore offers an additional 20% discount on old video games that have
already been reduced by 25%. Will the final cost be the same as a discount
of 45% on the original price? Use an example with an original cost of your
choice to help explain your answer.
4. The total bill for burgers and fries for four people is $21.70 before tax.
a. The sales tax is 8%. What will be the amount of sales tax added to the
bill? Show your work.
b. The group wants to leave a 12% tip on the cost of the food, not
including tax. What will be the amount of the tip? Show your work.
c. How much should each person pay if they are to share the bill equally?
Show your work.
2
Name
Date
Class
Decimal Ops
Unit REVIEW (continued)
5. Suppose that your grandma and grandpa send you $40 for your birthday. You’ve generously decided to
take your little brother to Liberty High School’s musical.
There is a 7% sales tax. You need to buy the following items:
Item
Cost
Your Ticket
$12.50
Brother’s Ticket
$12.50
Large Popcorn
$5.49
1 Soda for you
$2.35
1 Slurpee for Bro.
$1.99
a. How much will the entire event cost? Show your work.
b. You’d love to finish the evening by treating you and your brother to a waffle cone. It would cost
$8.68 total for both of you. Will you have enough money left to buy the ice cream treats? Explain.
6. Mrs. Buck is grading math tests. A student’s work on a problem is given
below:
0.17 × 32.4 = 5.508
Is the student correct? Explain.
mal Ops
7. The weight of an object is affected by gravity. Something that weighs
1 pound on Earth will weigh 1.08 times that weight (or 1.08 pounds)
on Saturn.
a. If a rock weighs 3 pounds on Earth, what will it weigh on Saturn?
b. If a rock weighs 3.24 pounds on Saturn, what will it weigh on Earth?
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