Introduction to Ratios, Rate and Unit Rate

Which rate is equivalent to 15 miles per hour?

• 30 miles in 3 hours

• 30 miles in 2 hours

• 30 miles in 5 hours

Hilbert burns 120 calories per 30 minutes of weight training.  Complete the table to chart his calorie expenditure for different amounts of time. What is the value of a?

• a= 80

• a= 6

• a= 60

• a= 120

What is the missing number in the ratio table?

• 72

• 85

• 76

• 90

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $35 per pound

• $5 per pound

• $0.125 per pound

What is a Ratio?

• Is a comparison of two quantities 

• To multiply two fractions 

• A number over another number

• Two decimals that can be multiplied

How many ways can you write a ratio

• 1

• 3

• 2

• 4

Which of the following in not a way to compare ratios?

• part to part

• whole to part

• whole to whole

• part to whole

A rate is a ratio that compares

• A part to a part

• A part to a whole

• Quantities with different units

• Quantities with the same units

If there are 5 boys and 7 girls, write the ratio of girls to boys.

• 5 to 7

• 7 to 5

• 5 to 12

• 7 to 12

Which is the "better buy"?  A 12 ounce can of Coke for $1.50 or a 24 ounce can of coke for $3.00?

• They are the same

• The  20 ounce can

• The 12 ounce can