Dividing 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 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 a number?

Back

The reciprocal of a number is 1 divided by that number. For example, the reciprocal of 2 is 1/2.

Front

What happens to the sign of the quotient when dividing two numbers with the same sign?

Back

The quotient is positive when both numbers have the same sign.

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Front

What happens to the sign of the quotient when dividing two numbers with different signs?

Back

The quotient is negative when the numbers have different signs.

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Front

Calculate: -1/2 ÷ 1/4

Back

-2

Tags

CCSS.7.NS.A.2B

Front

Calculate: 3/5 ÷ -2/3

Back

-9/10

Tags

CCSS.7.NS.A.2B

Front

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

Back

The result is negative.

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Front

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

Back

The result is negative.

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Front

Calculate: 4 1/3 ÷ -3 1/6

Back

-1 7/19

Tags

CCSS.7.NS.A.2B