Math 6/7 Unit 4 test 1 Review

Front

What is the formula to find the price per gallon when given total cost and total gallons?

Back

Price per gallon = Total cost / Total gallons

Front

If 5 hot dogs are needed for every 3 people, how do you find the number of hot dogs needed for a different number of people?

Back

Use a ratio: (5 hot dogs / 3 people) = (x hot dogs / 9 people). Solve for x.

Front

How do you use a ratio table to find the cost of a different quantity of items?

Back

Set up a table with quantities and costs, then scale back to find the cost for the desired quantity.

Front

What is a proportion and how is it used in solving ratio problems?

Back

A proportion is an equation that states two ratios are equal. It can be used to find unknown values in ratio problems.

Front

If the ratio of dogs to cats is 5 to 3, how can you find the number of cats if you know the number of dogs?

Back

Set up a proportion: 5 dogs / 3 cats = 25 dogs / x cats. Solve for x.

Front

How do you scale up a ratio when given a smaller quantity?

Back

Multiply both parts of the ratio by the same factor to find the new quantity.

Front

What is the relationship between ounces and pieces in a package of snacks?

Back

The number of pieces is proportional to the weight in ounces.

Front

How do you set up a table to find the expected number of pieces in a larger package?

Back

Create a table with ounces in one column and pieces in another, then use the ratio to find the expected pieces.

Front

What is the first step in solving a word problem involving ratios?

Back

Identify the quantities involved and their relationship (the ratio).

Front

How can you check if your answer to a ratio problem is reasonable?

Back

Compare your answer to the original ratio and see if it maintains the same relationship.