Better Buy: Unit Rate

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as one unit. For example, if you buy 5 apples for $10, the unit rate is $2 per apple.

Front

How do you calculate the unit rate?

Back

To calculate the unit rate, divide the total cost by the total quantity. For example, if you spend $40 on 5 pounds of concrete, the unit rate is $40 ÷ 5 = $8 per pound.

Front

If Rose spent $2.00 for 20 pieces of gum, what is the unit rate per piece of gum?

Back

The unit rate is $2.00 ÷ 20 = $0.10 per piece of gum.

Front

If Joe spent $1.50 for 10 pieces of gum, what is the unit rate per piece of gum?

Back

The unit rate is $1.50 ÷ 10 = $0.15 per piece of gum.

Front

Who got the better deal: Rose or Joe?

Back

Rose got the better deal because her unit rate of $0.10 per piece of gum is less than Joe's $0.15.

Front

What is the unit rate for $40 spent on 5 pounds of concrete?

Back

The unit rate is $8 per pound.

Front

If Sarah buys 15 kg of tomatoes for $32.25, what is the unit rate?

Back

The unit rate is $32.25 ÷ 15 = $2.15 per kg.

Front

If Sarah buys 4 kg of tomatoes for $8.72, what is the unit rate?

Back

The unit rate is $8.72 ÷ 4 = $2.18 per kg.

Front

Which is the better deal for tomatoes: 15 kg for $32.25 or 4 kg for $8.72?

Back

The better deal is 15 kg for $32.25 because the unit rate is lower.

Front

How do you determine the best deal when comparing prices?

Back

To determine the best deal, calculate the unit rate for each option and compare them. The option with the lowest unit rate is the best deal.