Multiply and Divide Positive Rational Numbers

Front

What is a positive rational number?

Back

A positive rational number is a number that can be expressed as the quotient of two integers, where the numerator is a positive integer and the denominator is a non-zero integer.

Front

How do you multiply two fractions?

Back

To multiply two fractions, multiply the numerators together and multiply the denominators together. For example, (a/b) * (c/d) = (a*c)/(b*d).

Front

What is the process to divide fractions?

Back

To divide fractions, multiply the first fraction by the reciprocal of the second fraction. For example, (a/b) ÷ (c/d) = (a/b) * (d/c).

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, add the numerator, and place that result over the original denominator. For example, 2 1/3 = (2*3 + 1)/3 = 7/3.

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) of two or more numbers is the smallest number that is a multiple of each of the numbers.

Front

How do you find the greatest common factor (GCF)?

Back

The greatest common factor (GCF) of two or more numbers is the largest number that divides each of the numbers without leaving a remainder.

Front

What is the formula for finding the area of a rectangle?

Back

The area of a rectangle is found by multiplying its length by its width. Area = length × width.

Front

If Arian spent 24 days at Grandma's house, how many days did his brother spend if he spent ⅜ of that time?

Back

Arian's brother spent 9 days at Grandma's house.

Front

If Coralie ran 2/3 of a mile, how far did La'Tanya run if she ran 3 times as far?

Back

La'Tanya ran 2 miles.

Front

How much did Jennifer pay for 3.4 pounds of apples at $0.89 per pound?

Back

Jennifer paid $3.03 for the apples.