Rational Numbers - Add, Subtract, Multiply & Divide

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 add two rational numbers with different denominators?

Back

To add two rational numbers with different denominators, find a common denominator, convert each fraction, and then add the numerators.

Tags

CCSS.7.NS.A.1C

Front

What is the result of adding -3 and 5?

Back

The result is 2.

Tags

CCSS.7.NS.A.1C

Front

How do you subtract a rational number from another?

Back

To subtract a rational number, change the subtraction to addition of the opposite (add the negative) and follow the rules for addition.

Tags

CCSS.7.NS.A.1B

Front

What is the product of two negative rational numbers?

Back

The product of two negative rational numbers is a positive rational number.

Tags

CCSS.7.NS.A.2A

Front

Calculate: -1/4 x (-4/3)

Back

1/3

Tags

CCSS.7.NS.A.2A

Front

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

Back

The result is a negative number.

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Front

How do you multiply a rational number by a whole number?

Back

Multiply the numerator of the fraction by the whole number and keep the same denominator.

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Front

What is the sum of 1/2 and 1/3?

Back

The sum is 5/6.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

Calculate: -0.6 ÷ 3/4

Back

-0.8

Tags

CCSS.7.NS.A.2B