Calculate with 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 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

What is the quotient of 1/4 ÷ 1/12?

Back

3

Front

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

Back

Multiply the whole number by the denominator, add the numerator, and place the result over the original denominator. For example, 5 1/2 = (5*2 + 1)/2 = 11/2.

Front

If Victor made 5 1/2 cups of trail mix and put 1/2 cup in each bag, how many bags did he fill?

Back

11 bags

Front

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

Back

Area = length × width.

Front

What is the area of a rectangular picture frame with length 4 4/5 inches and width 6 1/4 inches?

Back

30 in²

Front

How do you multiply fractions?

Back

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

Front

What is the value of 8 ÷ 3/4?

Back

8 x 4/3.

Front

How do you convert a decimal to a fraction?

Back

Write the decimal as a fraction with 1 as the denominator, then multiply the numerator and denominator by 10 for each digit after the decimal point.