Adding and Subtracting 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, you add their absolute values and keep the negative sign. For example, -3 + (-2) = -5.

Front

What is the result of -7 - 2?

Back

-9

Front

How do you subtract a positive rational number from a negative rational number?

Back

Subtracting a positive number from a negative number results in a more negative number. For example, -5 - 3 = -8.

Front

What is the result of 1/4 - 3/10?

Back

-1/20

Front

How do you add two negative fractions?

Back

To add two negative fractions, find a common denominator, add the numerators, and keep the negative sign. For example, -1/2 + (-1/3) = -5/6.

Front

What is the result of -9 + (-5)?

Back

-14

Front

How do you subtract two fractions with different denominators?

Back

Find a common denominator, convert the fractions, and then subtract the numerators. For example, 1/4 - 1/6 = 1/12.

Front

What is the result of -23.4 - 3.4?

Back

-26.8

Front

How do you subtract a negative fraction from a negative fraction?

Back

Subtracting a negative fraction is the same as adding its positive equivalent. For example, -3/4 - (-2/3) = -3/4 + 2/3.