Rates & Unit Rates

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 a quantity of one. It is often used to determine the cost per item or the rate of something per unit of measure.

Front

How do you calculate the unit price of an item?

Back

To calculate the unit price, divide the total price by the number of units. For example, if a product costs $20 for 10 slices, the unit price is $20 ÷ 10 = $2 per slice.

Front

What is the unit rate of customers per hour if a store has 120 customers in 6 hours?

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The unit rate is calculated by dividing the total number of customers by the total hours. Therefore, 120 customers ÷ 6 hours = 20 customers per hour.

Front

If Lynnette can wash 95 cars in 5 days, how do you find the number of cars she washes each day?

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To find the number of cars washed each day, divide the total number of cars by the number of days. So, 95 cars ÷ 5 days = 19 cars per day.

Front

What is the formula to find the unit rate?

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The formula to find the unit rate is: Unit Rate = Total Quantity ÷ Total Units.

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How do you compare two unit prices to determine the better deal?

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To compare two unit prices, calculate the unit price for each item and then compare the values. The item with the lower unit price is the better deal.

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What is the unit rate of portraits painted per week if Luke can paint 91 portraits in 7 weeks?

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To find the unit rate, divide the total number of portraits by the number of weeks: 91 portraits ÷ 7 weeks = 13 portraits per week.

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Why is it important to understand unit rates in real-life situations?

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Understanding unit rates helps consumers make informed decisions about purchases, compare prices, and evaluate the efficiency of services.

Front

What is the significance of finding the missing numerator in a rate problem?

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Finding the missing numerator is crucial for solving rate problems as it allows you to establish a complete ratio or rate, which is necessary for further calculations.

Front

How can you express a rate as a fraction?

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A rate can be expressed as a fraction by placing the quantity of one item in the numerator and the quantity of the other item in the denominator, such as cars per day or dollars per item.