Ratios, Percents, & Proportions

Equivalent Ratios

100

Find one equivalent ratio for 25/100

1/4, 4/16, 5/20, etc. 

200

What is equivalent to 72%?

a) .0072

b) 72/10

c) .72

d) 77.2/100

c) .72

300

Is 5/25 = 1/4? 

No, they are not equivalent. 

5 x 4 = 25 x 1

20 = 25 (Not equivalent) 

400

What percent is equivalent to .04?

4%

500

solve for J: 

J / 15 = 6 / 9 

J=10

Ratios

100

There are 10 marbles in a jar. 5 green, 2 orange, 0 blue, and 3 red. What is the ratio of green to orange marbles?

5:2 

200

What do you picture for the vocabulary term unit rate?

A unit rate is when the denominator is 1. Ex. 5miles / 1 hour  or 80 heart beats / 1 minute 

300

On a map the distance from Arizona to California is 5 cm. If the scale to actual distance ratio is 1 cm / 100 miles, what is the actual distance? 

500 miles 

400

If Lisa ran 27 miles in 3 hours, what is the unit rate?

9 miles/ 1 hour 

500

If the unit price for bananas is $0.50 per pound, and Andrea pays $3.25. How many bananas did Andrea buy?

6.5 bananas 

Conversions

100

.0089 > percent

.89%

200

52% > fraction

52/100

300

250/500 > decimal 

.50 

400

3.15 > percent

315%

500

.26 > fraction

26/100

Percents

100

12 out of 30 people don't like the color pink. What percent likes the color pink?

60% 

200

What is 62% of 185?

114.7

300

What is the best ESTIMATE of 36% of 50? 

2

400

A barbie house is normally $350. The discount is 30% off for today only. What is the new price of the barbie house?

$245

500

Jocelyn went to a restaurant with her family. The bill was $56.75. If they left a 20% tip, what would the new total be? 

$68.10