Operations with 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 add two rational numbers with different signs?

Back

To add two rational numbers with different signs, subtract the absolute values and take the sign of the number with the larger absolute value.

Tags

CCSS.7.NS.A.1C

Front

What is the result of adding a positive rational number to a negative rational number?

Back

The result can be positive, negative, or zero, depending on the absolute values of the numbers being added.

Tags

CCSS.7.NS.A.1C

Front

What is the process for multiplying two negative rational numbers?

Back

When multiplying two negative rational numbers, the result is positive.

Tags

CCSS.7.NS.A.2A

Front

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

Back

The result is negative.

Tags

CCSS.7.NS.A.2A

Front

How do you divide rational numbers?

Back

To divide rational numbers, multiply by the reciprocal of the divisor.

Tags

CCSS.7.NS.A.2C

Front

What is the sum of -5.7 and 0.9?

Back

The sum is -4.8.

Tags

CCSS.7.NS.A.1C

Front

What is the sum of -9 and -5?

Back

The sum is -14.

Tags

CCSS.7.NS.A.1C

Front

What is the product of -2, -5, -1, and -9?

Back

The product is positive.

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Front

What is the value of 2/9 as a decimal?

Back

The value of 2/9 as a decimal is approximately 0.222.

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1