Adding & 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 numbers?

Back

When adding two negative numbers, you add their absolute values and keep the negative sign. For example, -4 + (-6) = -10.

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 larger, the result is positive; if the negative number is larger, the result is negative.

Front

Evaluate: 3 + (-7)

Back

-4

Front

What does it mean to subtract a negative number?

Back

Subtracting a negative number is the same as adding its positive counterpart. For example, 5 - (-3) = 5 + 3 = 8.

Front

Evaluate: -5 - 3

Back

-8

Front

What is the result of adding zero to a number?

Back

Adding zero to any number does not change its value. For example, 7 + 0 = 7.

Front

Evaluate: -10 + 4

Back

-6

Front

What is the difference between -8 and -3?

Back

The difference is found by subtracting: -8 - (-3) = -8 + 3 = -5.

Front

Evaluate: 12 - 15

Back

-3