Add and Subtract Integers

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but does not include fractions or decimals.

Front

What is the opposite of a positive integer?

Back

The opposite of a positive integer is the same integer with a negative sign in front of it.

Front

What is the opposite of -5?

Back

The opposite of -5 is 5.

Front

How do you add two integers with the same sign?

Back

When adding two integers with the same sign, add their absolute values and keep the common sign.

Front

What is the sum of -3 and -7?

Back

The sum of -3 and -7 is -10.

Front

How do you add two integers with different signs?

Back

When adding two integers with different signs, subtract the smaller absolute value from the larger absolute value and take the sign of the integer with the larger absolute value.

Front

What is the result of 8 + (-3)?

Back

The result of 8 + (-3) is 5.

Front

What is the result of -10 - 5?

Back

The result of -10 - 5 is -15.

Front

How do you subtract an integer?

Back

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

Front

What is the result of 15 - 20?

Back

The result of 15 - 20 is -5.