Ratios and Rates
Proportions and Scale Drawings
Percents
Percents, Decimals, and Fractions
Finding % of a Number
100
5/6 = 15/?
18
100
24/36 = 10/?
15
100
Write the percent as a decimal and as a fraction. 7%
7/100 .07
100
Write this fraction as a percent. 200/1000
20%
100
Find 40% of 80.
32
200
5/8 = 45/?
72
200
?/4 = 45/18
10
200
Write this number as words and as a percent. 23/50
Twenty three fiftieths 46%
200
Write this decimal as a percent and fraction. .6
60% 6/10 or 60/100
200
65% of 150
97.5
300
225 miles ________ 25 hours Find the unit rate
9 miles _______ 1 hour
300
A company makes 8 oz of food for 12.98. How much would it cost to make 12 oz of food?
$19.47
300
1/12 is what percent? How do you take a fraction and turn it into a percent?
Divide the top number by the bottom number. 8.3%
300
Write this as a percent. .135
13.5%
300
Jeans cost $40. You get a 15% discount. How much money do you get off?
$6.00
400
There are 12 girls for every 7 boys. Write this ratio in 3 different ways if there are 28 boys.
48:28 48 to 28 48 / 28
400
A model airplane has a scale of 2 inches to 15 feet in real life. If the model was 20 inches long, how long was the real airplane?
150 feet
400
You got 16 out of 20 on a test. What percent did you get on the test?
80%
400
Change these all to a percent and then put them in order. 2/9, .20, 22%
20%, 22%, 22.2%
400
You go out to eat. The bill is $25.50. You tip 20%. How much is the total bill?
25.50 + 5.10 (tip) = $30.60
500
Your friend buys 26 bagels for $10.40. You buy 39 bagels at the price of 3 bagels for $1 Which purchase is a better buy? Explain.
26 bagels were .40 per bagel 39 bagels were .33 per So the 39 bagels were the better buy.
500
A painting has sides with lengths of 5 feet and 4 feet. Someone made a miniature version of the painting. The scale they used was 1 foot on the painting equals 2 inches on the miniature version. What was the perimeter of the miniature painting?
36 inches
500
There were 25 students that were in the class. 6 of them liked cheese. 10 of them liked bread. The rest liked neither cheese nor bread. What percent like cheese, bread, and neither.
24% cheese 40% bread 36% neither
500
Change these all to a percent and then put them in order. 4/9, .45, 43%, 7/15
43%, 44.4%, 45%, 46.6%
500
You go out shopping with your BFF's. You purchase a new golf club for Mr. Roozeboom because he rocks the house. It cost $130. You have to pay 7% sales tax. (remember that is .07 not .7) But you also get 15% off because you have a coupon. What is the total bill? First add tax and then subtract the 15% you get off.
130 x .07 = 9.10 So 130 + 9.10 = $139.10 130 x .15 = 19.50 So 139.10 - 19.50 = $119.60
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