MS Math 7th grade unit 2 assessment

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

If the ratio of tenants to cars is 3:5 and there are 30 tenants, how many cars are there?

Back

50 cars

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

If 3 pounds of hamburger costs $6, how much does 10 pounds cost?

Back

$20

Front

How do you solve a proportion?

Back

Cross-multiply the terms and then solve for the variable.

Front

If Cookie Monster uses 2 cups of chocolate chips for every 3 dozen cookies, how many cups does he need for 54 cookies?

Back

3 cups

Front

What is the formula to find the total number of items based on a ratio?

Back

Total items = (part of first item / total parts) * total quantity.

Front

If k/10 = 5/2, what is k?

Back

k = 25.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second quantity is the denominator.

Front

How do you find a missing value in a proportion?

Back

Set up the proportion and cross-multiply to find the missing value.