Multiply and Divide Rational Numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Tags

CCSS.5.NBT.A.2

Front

How do you multiply two rational numbers?

Back

To multiply two rational numbers, multiply their numerators together and their denominators together. Simplify if possible.

Tags

CCSS.7.NS.A.2C

Front

What is the result of multiplying ⅛ by ⅘?

Back

The result is ⅛ * ⅘ = ⅖.

Tags

CCSS.4.NF.B.4A

CCSS.4.NF.B.4B

Front

How do you divide two rational numbers?

Back

To divide two rational numbers, multiply the first number by the reciprocal of the second number.

Tags

CCSS.7.NS.A.2C

Front

What is the reciprocal of ⅘?

Back

The reciprocal of ⅘ is ⅖.

Front

Calculate the quotient of -3.6 and 0.06.

Back

-3.6 ÷ 0.06 = -60.

Tags

CCSS.7.NS.A.2B

Front

If Jackie rode around a park that is 8.54 miles long 4 times, how do you find the total distance?

Back

Multiply the length of the trail by the number of times: 8.54 miles * 4 = 34.16 miles.

Tags

CCSS.7.EE.B.3

Front

What is the formula to find the cost per person when sharing a total cost?

Back

Cost per person = Total cost ÷ Number of people.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If 12 friends share a total cost of $83.40, how much does each person pay?

Back

Each person pays $83.40 ÷ 12 = $6.95.

Tags

CCSS.6.NS.B.3

Front

Solve 0.729 ÷ 1.5.

Back

0.729 ÷ 1.5 = 0.486.

Tags

CCSS.5.NBT.B.7