GED MATH Eyeopener 3

Front

What is the unit rate?

Back

The unit rate is a comparison of two different quantities when they are combined together. It is often expressed as a quantity per one unit of another quantity.

Front

If 8 paintbrushes cost $10, how do you find the cost of one paintbrush?

Back

To find the cost of one paintbrush, divide the total cost by the number of paintbrushes: $10 ÷ 8 = $1.25 per paintbrush.

Front

How do you calculate a percentage of a total?

Back

To calculate a percentage of a total, multiply the total by the percentage (in decimal form). For example, to find 55% of 600, calculate 600 × 0.55 = 330.

Front

What is the formula to convert yards to feet?

Back

To convert yards to feet, multiply the number of yards by 3, since there are 3 feet in a yard.

Front

How many feet are in 8 1/3 yards?

Back

To convert 8 1/3 yards to feet, first convert to an improper fraction: 8 1/3 = 25/3 yards. Then multiply by 3: (25/3) × 3 = 25 feet.

Front

What is the distance between two numbers on a number line?

Back

The distance between two numbers is the absolute value of their difference. For example, the distance between -1 and 5 is |(-1) - 5| = | -6 | = 6.

Front

What is the greatest common factor (GCF)?

Back

The GCF is the largest positive integer that divides all the numbers in a set without leaving a remainder.

Front

How do you find the GCF of two numbers?

Back

To find the GCF of two numbers, list the factors of each number and identify the largest factor they have in common.

Front

What is the GCF of 25 and 45?

Back

The GCF of 25 and 45 is 5, as it is the largest number that divides both 25 and 45 without a remainder.

Front

What is a ratio?

Back

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