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

What is the product of two negative numbers?

Back

The product of two negative numbers is always positive.

Tags

CCSS.7.NS.A.2A

Front

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

Back

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

Tags

CCSS.7.NS.A.2A

Front

How do you find the difference between two fractions?

Back

To find the difference between two fractions, you need a common denominator, then subtract the numerators.

Tags

CCSS.7.NS.A.1C

Front

What is the sum of two rational numbers?

Back

The sum of two rational numbers is found by adding their numerators over a common denominator.

Tags

CCSS.7.NS.A.1C

Front

What is the rule for adding two negative numbers?

Back

When adding two negative numbers, the result is negative and you add their absolute values.

Tags

CCSS.7.NS.A.1C

Front

What is the rule for subtracting a negative number from a positive number?

Back

Subtracting a negative number from a positive number is the same as adding the absolute value of that negative number.

Tags

CCSS.7.NS.A.1C

Front

How do you divide a decimal by a decimal?

Back

To divide a decimal by a decimal, you can multiply both the numerator and denominator by 10 for each decimal place in the divisor to eliminate the decimals.

Tags

CCSS.6.NS.B.3

Front

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

Back

The result of adding a positive number to a negative number depends on the absolute values; if the positive number is larger, the result is positive, and if the negative number is larger, the result is negative.

Tags

CCSS.7.NS.A.1C

Front

What is the quotient of two numbers?

Back

The quotient is the result of dividing one number by another.

Tags

CCSS.3.OA.A.2