6.3E Multiplying and Dividing Fractions and decimals

Front

What is the process of multiplying fractions?

Back

To multiply fractions, multiply the numerators together and the denominators together. For example, 1/2 * 3/4 = (1*3)/(2*4) = 3/8.

Front

How do you divide fractions?

Back

To divide fractions, multiply the first fraction by the reciprocal of the second fraction. For example, 1/2 ÷ 3/4 = 1/2 * 4/3 = 4/6 = 2/3.

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a fraction. For example, 2 1/2 is a mixed number.

Front

How do you convert a mixed number to an improper fraction?

Back

To convert a mixed number to an improper fraction, multiply the whole number by the denominator and add the numerator. For example, 2 1/2 = (2*2 + 1)/2 = 5/2.

Front

What is the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length by its width. For example, if the length is 5 feet and the width is 3 feet, the area is 5 * 3 = 15 square feet.

Front

How do you find the total cost of multiple items?

Back

To find the total cost, multiply the price of each item by the quantity purchased and then add the costs together. For example, if grapes cost $2.49 per pound and 2 pounds are bought, the cost is 2 * 2.49 = $4.98.

Front

What is a decimal?

Back

A decimal is a way of representing fractions using a point to separate the whole number from the fractional part. For example, 0.75 represents 75/100.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers. For example, 0.75 + 0.25 = 1.00.

Front

What is the greatest common factor (GCF)?

Back

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

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. For example, if 4 apples cost $2, the unit rate is $0.50 per apple.