1. Unit 7 Test Review
Chapter 2
Lessons 1 & 3-8

2. 2-1
Percent of a Number
Write the percent as a fraction and then multiply OR
Write the percent as a decimal and then multiply
*You ALWAYS have to convert the percent to a fraction or decimal first!

3. 2-1
A survey asked people to name their favorite fruit. The results are shown in the table. Which fruit did 32% of
the people surveyed
name as their favorite?
Fruit
Number of People
Apples
110
Pears 80
Oranges 60
Total
250

4. 2-1
Mike asked his classmates if they watched the Hawks game last night and he found that 40% of the 30 students in his class watched the game. How many students in Mike’s class did not watch the game last night?

5. 2-3 The Percent Proportion 𝑖𝑠 𝑜𝑓 = % 100
𝑖𝑠 𝑜𝑓 = % 100
Break problem into parts using key words and set up proportion. Solve using cross-products.

6. (Percent must be written as decimal)
2-4
The Percent Equation
Part = Percent x Whole
(Percent must be written as decimal)
1.) Write out problem using percent proportion
2.) Put into equation form and solve

7. 2-3/2-4 Need to know how to solve the basic problems:
16 is 75% of what number?
What is 47.8% of 32?
What percent of 26 is 4?

8. 2-3/2-4
The Cunningham Middle School chess club has 55 members. 22 of the members are in seventh grade. What percent of the members of the chess club are in seventh grade?

9. 2-3/2-4
In the Splendor apartment complex, 35% of the apartments have one bedroom. If there are 49 one-bedroom apartments, how many apartments are in the Splendor complex?

10. 2-3/2-4
On SuperBowl Sunday, weather forecasters expected 5 inches of snow. Instead, it snowed 16 inches! What percentage more did it snow than was expected?

11. 2-3/2-4
For a school bake sale, Marlene made 36 cookies and 8 pies. What percent of the baked goods were pies? Round to the nearest whole percent.

12. 2-3/2-4
Suppose you earn $6 per hour at your part-time job. What will your new salary be after a 2.5% raise? Explain.

13. 2-5
Percent of Change
Percent of Change = 𝐵𝑖𝑔 # −𝑆𝑚𝑎𝑙𝑙 # 𝑜𝑟𝑖𝑔𝑖𝑛𝑎𝑙 𝑎𝑚𝑡 x 100
Answer has 3 parts:
# % increase/decrease
*Label the original amount and new amount in problem!

14. 2-5
Find each percent of change. Round to nearest whole percent if necessary.
Last year, there were 91 students enrolled in kindergarten. This year, there are 77.

15. 2-5
In 2009, one share of stock was worth $28. By 2014, one share of the same stock was worth $62.
The price of gasoline went from $3.45 to $3.39 in one day.

16. Day 2 Review
Lessons 6-8

17. 2-8 Simple Interest I = prt P = $ deposited or borrowed
R = change % to decimal
T = must be in years
If time is given in months, turn into a fraction over 12 to convert to years

18. 2-8
Read the problems carefully to figure out what you are solving for!
Round to the nearest cent if necessary

19. 2-8
How much interest will Hannah earn in 5 months if she deposits $630 in a savings account at 6.5% simple interest?

20. 2-8
Kelli Rae's inheritance from her great–grandmother was $220,000 after taxes. If Kelli Rae invests this money in a savings account that earns $18,260 in simple interest over 3 years, what is the interest rate on her account? Round to the nearest tenth.

21. 2-8
Mona opened a savings account with a $500 deposit and a simple interest rate of 5.6%. If there were no deposits or withdrawals, how much money is in the account after years?

22. 2-6 Sales Tax, Tip, and Markup To Find sales tax/tip/markup amount:
Change % to decimal
Multiply by original price
To Find Total Cost:
Add tax/tip/markup amount to original price

23. 2-6 Total Cost should be MORE than what you started with
Don’t round until the end if looking for total cost
Label answers and round to nearest cent if necessary

24. 2-6
A limited-edition soccer ball costs $30, and the sales tax is 6.5%. What is the total cost of the soccer ball?
The wholesale cost for shirts bought by a sporting goods store is $20 per shirt. The shirts will be marked up 40%. What will be the selling price?

25. 2-6
You go out to dinner and spend $38 on food. There is a 5.75% sales tax and you want to leave the server a tip of 18%. What is your final total after finding the sales tax and calculating the tip?

26. 2-6
A manicure costs $18. The sales tax is 8.25%. Jenna wants to tip 20%. Is $22 sufficient to cover the manicure, tax, and tip? Explain.

27. 2-7 Discount To find discount amount: To find sales price:
Change % to decimal
Multiply by original price
To find sales price:
Subtract discount amount from original price

28. 2-7 Sales price should be LESS than what you started with
Don’t round until the end if looking for sales price
Label answers and round to nearest cent if necessary

29. 2-7
John bought a new baseball bat. The regular price was $54.50, but it was on sale for 15% off. How much did it cost?

30. 2-7
Mary and Jennifer bought identical sweaters at different stores. Mary’s sweater originally cost $65 and was discounted 25%. Jennifer’s sweater originally cost $75 and was on sale for 30% off of the original price. Which sweater was the better buy? Explain.

31. 2-7
A sports store is having a sale on in-line skates. They cost $135, but they are on sale for 20% off. If there is a 5.5% sales tax added after the discount, what is the total cost of the skates?

32. 2-7
A radio is on sale for $50. If this price represents a 10% discount from the original price, what is the original price to the nearest cent?