Add and Subtract 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

What is the additive inverse of a number?

Back

The additive inverse of a number is the value that, when added to the original number, results in zero. For example, the additive inverse of 5 is -5.

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 result of adding a positive number and a negative number?

Back

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

Front

Calculate: 0.15 + 2.3

Back

2.45

Front

What is the missing number in the equation: 0.5 + _____ = 1?

Back

0.5

Front

Calculate: 0.01 + 0.1

Back

0.11

Front

What is the result of subtracting a negative number from a positive number?

Back

Subtracting a negative number is the same as adding its positive counterpart. For example, 4 - (-2) = 4 + 2 = 6.

Front

Calculate: 4.56 - (-0.04)

Back

4.6

Front

What is the sum of two negative rational numbers?

Back

The sum of two negative rational numbers is always negative.