Ratios and Proportions

Pat needs 14 sticks of pepperoni to make 28 pizzas. How many sticks of pepperoni are needed to make 36 pizzas?

• 16 sticks

• 18 sticks

• 20 sticks

• 22 sticks

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

• 2:3

• 3:2

• 1:1

• 4:3

What is the scale factor in similar figures?

• The ratio of the lengths of corresponding sides.

• The difference in area between the figures.

• The sum of the angles in the figures.

• The perimeter of the larger figure divided by the smaller figure.

What is an equivalent ratio?

• Ratios that express the same relationship between quantities.

• Ratios that are always equal to one another.

• Ratios that compare different units of measurement.

• Ratios that are used only in financial calculations.

If a car travels 60 miles in 1 hour, how far will it travel in 3 hours?

• 120 miles

• 150 miles

• 180 miles

• 200 miles

Solve for k: 2/3 = k/9

• k = 4

• k = 5

• k = 6

• k = 7

What is the cross-multiplication method used for?

• To solve proportions by multiplying the means and extremes.

• To find the square root of a number.

• To calculate the area of a triangle.

• To determine the slope of a line.

What is a proportion?

• A relationship between two numbers that shows how many times one value contains another.

• When two ratios are equivalent and show the same value.

• A mathematical expression that represents the sum of two or more quantities.

• A type of graph that displays data points in a coordinate system.

If a map has a scale of 1:100, what does that mean?

• 1 unit on the map represents 10 units in reality.

• 1 unit on the map represents 50 units in reality.

• 1 unit on the map represents 100 units in reality.

• 1 unit on the map represents 200 units in reality.

What is a ratio?

• A comparison of two quantities by division.

• A method of calculating percentages.

• A way to measure distance between two points.

• A technique for averaging multiple values.