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. For example, (a/b) * (c/d) = (a*c)/(b*d).

Tags

CCSS.7.NS.A.2A

Front

What is the rule for dividing rational numbers?

Back

To divide by a rational number, multiply by its reciprocal. For example, (a/b) ÷ (c/d) = (a/b) * (d/c).

Tags

CCSS.7.NS.A.2C

Front

Solve: 0.729 ÷ 1.5

Back

0.486

Tags

CCSS.6.NS.B.3

Front

Solve: -3.6 ÷ 0.06

Back

-60

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Front

What is the result of multiplying a positive rational number by a negative rational number?

Back

The result is a negative rational number.

Tags

CCSS.7.NS.A.2A

Front

What is the result of dividing a negative rational number by a positive rational number?

Back

The result is a negative rational number.

Tags

CCSS.7.NS.A.2B

Front

Sarah needs to cut 7 and a half feet of ribbon into 2 and 2/3 feet pieces. How many pieces will she be able to make?

Back

2 and 13/16

Tags

CCSS.6.NS.A.1

Front

Solve: 5/6 * (-8/15)

Back

-4/9

Tags

CCSS.7.NS.A.2A

Front

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

Back

$6.95

Tags

CCSS.6.NS.B.3