Addition and Subtraction of 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.

Front

How do you add two negative rational numbers?

Back

To add two negative rational numbers, add their absolute values and keep the negative sign.

Front

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

Back

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

Front

What is the process for subtracting rational numbers?

Back

To subtract a rational number, add its opposite. For example, a - b is the same as a + (-b).

Front

How do you find a common denominator for adding fractions?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators.

Front

What is the sum of -1/3 and -1/6?

Back

-1/2

Front

What is -4.5 + 7.9 - 6.3?

Back

-2.9

Front

What is the result of -28 + (-8)?

Back

-36

Front

How do you add -3/7 and 4/5?

Back

Convert to a common denominator, then add: -3/7 + 4/5 = 13/35.

Front

What is -25 - 15 + 10?

Back

-30