Unit 4 Pre-Assessment

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a : b'. For example, the ratio of 2 apples to 3 oranges is written as 2 : 3.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD). For example, to simplify the ratio 35 : 14, divide both numbers by 7 to get 5 : 2.

Front

What is the ratio of players to coaches if there are 10 players and 3 coaches?

Back

The ratio of players to coaches is 10 : 3.

Front

If Kevin mixes red and yellow paint in a ratio of 3 oz to 5 oz, how much yellow paint is needed for 9 oz of red paint?

Back

To find the amount of yellow paint, set up a proportion: 3/5 = 9/x. Solving gives x = 15 oz.

Front

What is the cost of one muffin if Mrs. Taylor paid $3 for 6 muffins?

Back

The cost of one muffin is $3 ÷ 6 = $0.50.

Front

If Ms. Elder paid $9 for 18 muffins, what is the cost of one muffin?

Back

The cost of one muffin is $9 ÷ 18 = $0.50.

Front

Are the costs of one muffin from Mrs. Taylor and Ms. Elder equivalent?

Back

Yes, both paid $0.50 for one muffin, so they are equivalent.

Front

What does it mean to find a missing number in a sequence?

Back

Finding a missing number involves identifying a number that completes a pattern or equation based on the given numbers.

Front

What is the greatest common divisor (GCD)?

Back

The GCD is the largest number that divides two or more numbers without leaving a remainder. For example, the GCD of 12 and 8 is 4.

Front

How do you express a ratio in simplest form?

Back

To express a ratio in simplest form, divide both parts of the ratio by their GCD.