Adding & 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: 7 - (-3) = ?

Back

10

Front

Calculate: 4 + (-6) = ?

Back

-2

Front

Calculate: 12 - (-2) = ?

Back

14

Front

What is the result of adding a positive integer and a negative integer?

Back

The result depends on the absolute values of the integers. Subtract the smaller absolute value from the larger one and take the sign of the integer with the larger absolute value.

Front

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

Back

It is the same as adding the positive integer. For example, 5 - (-3) = 5 + 3 = 8.

Front

If you have -33 feet and dig down 20 feet, what is your new height?

Back

-53 feet.

Front

If you have -53 feet and dig down another 25 feet, what is your new height?

Back

-78 feet.