# eQuizShow

## Chapter 7 Review

### Vocabulary

Question: A comparison of two numbers by division

Answer: Ratio

Question: A ratio of two measurements with different units

Answer: Rate

Question: A ratio of the distance on a map to the actual distance

Answer: Scale

Question: A rate that is simplified so the denominator is 1

Answer: Unit Rate

Question: An equation that shows two ratios are equivalent

Answer: Proportion

### Ratios & Rates

Question: Write the ratio as a fraction in simplest form. 16:12

Answer: 4/3

Question: Write the ratio as a fraction in simplest form. 6ft : 12in

Answer: 6/1

Question: Find the unit rate- $23.75 for 5 pounds

Answer: $4.75 per pound

Question: Find the unit rate 14 laps in 4 minutes

Answer: 3.5 or 3 1/2 laps per min

Question: Which is the better buy? 12 oz for $2.16 32 oz for $5.60 64 oz for $10.24

Answer: 64 oz for $10.24

### Proportions

Question: Solve- x/10 = 3/5

Answer: x = 6

Question: Solve- 15/w = 35/21

Answer: w = 9

Question: 7/18 = d/6

Answer: d= 2 1/3

Question: Set up a proportion and solve- What is 225% of 60?

Answer: 135

Question: Set a proportion and solve- A Boeing 747 jet is 70.5 meters long and has a wingspan of 60 meters. A model of the 747 has a wingspan of 80 cm. What is the length?

Answer: 94 cm

### Scale

Question: Find the length of the object on the drawing knowing the following: a minivan is 10 feet long; use the scale- 2 inches = 1 foot

Answer: 20 inches

Question: Find the length on the drawing knowing: a rose garden is 9 meters wide and the scale is 3 cm = 1 meter

Answer: 27 com

Question: Find the actual if you know on the drawing a library is 5.2 cm wide and the scale is 1 cm = 2 m

Answer: 10.4 meters

Question: Find the scale factor if you know the scale is 1 cm = 2.5 m

Answer: 1/250

Question: Find the scale factor if you know the scale is 0.5 cm = 1.5 m

Answer: 1/300

### Percents

Question: Change this percent to a fraction in simplest form 6.2%

Answer: 31/500

Question: Change this fraction to a percent 3/8

Answer: 37.5%

Question: Write the percent as a decimal and a fraction. 0.1%

Answer: 0.001; 1/1,000

Question: 6% of what number is 10.5?

Answer: 175

Question: What percent of 25 is 30?

Answer: 120%