Adding and Subtracting Integers

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero.

Front

What does it mean to add integers?

Back

Adding integers involves combining their values. If both integers are positive, the result is positive. If both are negative, the result is negative. If one is positive and one is negative, subtract the smaller absolute value from the larger absolute value and take the sign of the integer with the larger absolute value.

Front

What does it mean to subtract integers?

Back

Subtracting integers is the same as adding the opposite. For example, to subtract a negative integer, you add its positive counterpart.

Front

Calculate: -9 + (-2) + 9

Back

-2

Front

Calculate: -2 - (-9)

Back

7

Front

Calculate: 7 - (-2) - 4

Back

5

Front

Calculate: 8 + (-7)

Back

1

Front

Calculate: -6 - 3 + 15

Back

6

Front

What is the rule for adding a positive integer to a negative integer?

Back

When adding a positive integer to a negative integer, 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 rule for subtracting a negative integer?

Back

Subtracting a negative integer is the same as adding its positive counterpart.