Mid-unit 3 Review

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It is often expressed as a quantity per one unit, such as miles per hour or cost per item.

Front

How do you calculate the unit price of an item?

Back

To calculate the unit price, divide the total cost of the item by the number of units. For example, if a box of 35 diapers costs $6.99, the unit price is $6.99 ÷ 35 = $0.20 per diaper.

Front

What is the formula to find the price per pound?

Back

The price per pound can be found by dividing the total price by the total weight in pounds. For example, if you spend $3.75 for 3 pounds of granola, the price per pound is $3.75 ÷ 3 = $1.25.

Front

How do you determine which store has a better deal?

Back

To determine which store has a better deal, calculate the price per item for each store and compare them. The store with the lower price per item offers the better deal.

Front

If a carpenter charges $25 per hour, how much will it cost for 4 hours of work?

Back

The cost for 4 hours of work would be $25 × 4 = $100.

Front

What is the relationship between grams and cups in a recipe?

Back

The relationship between grams and cups varies depending on the ingredient. For example, Toby uses 12 grams of peanuts to make 50 cups of peanut butter, which can be used to find the amount needed for different quantities.

Front

How do you find the total cost when given the unit price?

Back

To find the total cost, multiply the unit price by the number of units purchased. For example, if one candy bar costs $0.65 and you buy 6, the total cost is $0.65 × 6 = $3.90.

Front

What is the importance of calculating unit rates in shopping?

Back

Calculating unit rates helps consumers compare prices and make informed decisions about where to shop for the best deals.

Front

If you have 12 grams of peanuts for 50 cups of peanut butter, how many grams do you need for 75 cups?

Back

To find out how many grams are needed for 75 cups, set up a proportion: (12 grams / 50 cups) = (x grams / 75 cups). Solving gives x = 18 grams.

Front

What does it mean if two stores have the same price for an item?

Back

If two stores have the same price for an item, it means that the cost per item is equal, and neither store offers a better deal.