Name _________________________
Unit 4 Final Assessment
Simplify each ratio. Write your answer in fraction form.
- 4 to 20
- 3 : 9
- 10 to 24
Write a rate that compares the quantities described in each problem.
- 6 pies on 3 trays
- 30 cans per case
Write a unit rate for each.
- How many students per classroom if there are 90 students in 3 classrooms?
- How many donuts per box if there are 32 donuts in 4 boxes?
Identify whether or not each pair of ratios form a proportion. Write yes if the do, no if they do not.
Use mental math to solve for the unknown value of each proportion.
Find the actual dimensions using proportions.
- The scale of the drawings shows that 3” equals 4 feet. If the drawing shows the height of the building is 9”, how tall is the building?
- The scale of the map shows that 1” equals 20 miles. If the map shows 5 inches between towns, what is the actual distance between them?
Simplify each ratio to find the scale factor.
Complete the chart.
Ratio | Fraction | Decimal | Percent |
33 out of 100 | 0.33 | ||
| 0.76 | ||
69 out of 100 | 69 % | ||
| 21 % |
Write each fraction as a percent.
20. 
21. 
22. 
Write each decimal as a percent.
23. 0.96
24. 0.7
25. 0.52
Find the percent of each number.
26. What is 10% of 200?
27. 20 is what percent of 80?
28. 40 is 40% of what number?
Calculate each new price based on the discount and the original price. Round to the nearest cent if needed.
29. $29.95 original price discounted 20%
30. $108.00 original price discounted 15%
31. $34.50 original price discounted 10%
Calculate the amount paid including sales tax if the sales tax is 5%. Round to the nearest cent if needed.
32. If the item costs $102.00, the total is _______________
33. If the items costs $25.95, the total is ________________
34. If the item costs $45.85, the total is _______________
Bonus
Your bill at a restaurant was $40.00, sales tax is 10%, and you leave a 20% tip. How much do you leave your waiter?