Calculate Sums and Differences 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 rational numbers with different denominators?

Back

To add two rational numbers with different denominators, find a common denominator, convert each fraction, and then add the numerators.

Front

What is the sum of -1/2 and 1/3?

Back

-1/6

Front

How do you subtract rational numbers?

Back

To subtract rational numbers, change the subtraction to addition of the opposite (add the negative) and follow the same rules for addition.

Front

What is -4.68 + -1.24?

Back

-5.92

Front

What is the result of adding two negative rational numbers?

Back

The result is always a negative rational number.

Front

What is -1/3 + (-1/6)?

Back

-1/2

Front

How do you find the sum of a negative and a positive rational number?

Back

Subtract the absolute values and take the sign of the number with the larger absolute value.

Front

What is -6.23 + 7.5?

Back

1.27

Front

What is -40 + 15.05?

Back

-24.95