EM2 Module 1 Review

Front

What is a ratio?

Back

A ratio is a relationship between two numbers that shows how many times the first number contains the second.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, 30% of 270 is calculated as 270 * 0.30 = 81.

Front

If 1 gift bag requires 8 bows, how many bows are needed for 25 gift bags?

Back

200 bows are needed for 25 gift bags (25 * 8 = 200).

Front

What is the total number of hats if Julie has 3 pink, 5 blue, 4 purple, and 2 orange hats?

Back

The total number of hats is 14 (3 + 5 + 4 + 2 = 14).

Front

What is the ratio of blue hats to total hats if Julie has 5 blue hats out of 14 total hats?

Back

The ratio is 5:14.

Front

If there are 256 bows, how many gift bags can be made if each bag requires 8 bows?

Back

32 gift bags can be made (256 / 8 = 32).

Front

What does it mean to simplify a ratio?

Back

Simplifying a ratio means reducing it to its simplest form by dividing both terms by their greatest common divisor.

Front

How do you express a ratio in fraction form?

Back

A ratio can be expressed in fraction form by writing the first number as the numerator and the second number as the denominator.

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions state that two ratios are equal.

Front

How can you find the missing value in a proportion?

Back

To find the missing value in a proportion, cross-multiply and solve for the unknown.