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

When adding two rational numbers with different signs, subtract the smaller absolute value from the larger absolute value and keep the sign of the number with the larger absolute value.

Tags

CCSS.7.NS.A.1C

Front

What is the result of adding two negative rational numbers?

Back

The result of adding two negative rational numbers is always a negative rational number.

Tags

CCSS.7.NS.A.1C

Front

How do you subtract rational numbers?

Back

To subtract rational numbers, add the opposite of the number being subtracted to the first number.

Tags

CCSS.7.NS.A.1B

Front

What is the product of a positive rational number and a negative rational number?

Back

The product of a positive rational number and a negative rational number is a negative rational number.

Tags

CCSS.7.NS.A.2A

Front

What is the quotient of two rational numbers?

Back

The quotient of two rational numbers is found by multiplying the first number by the reciprocal of the second number.

Tags

CCSS.7.NS.A.2C

Front

What is the difference of -96.43 - (-98.67)?

Back

The difference is 2.24.

Tags

CCSS.7.NS.A.1C

Front

What is the simplified value of 12.4 x (-6.3)?

Back

The simplified value is -78.12.

Tags

CCSS.7.NS.A.2A

Front

How do you find the average of a set of rational numbers?

Back

To find the average, sum all the numbers and divide by the total count of numbers.

Tags

CCSS.7.EE.B.3

Front

What is the result of combining a number with its opposite?

Back

The result is zero.

Tags

CCSS.7.NS.A.1B