Adding and Subtracting Integers

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but not a fraction or decimal.

Front

What is the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, the absolute value of -5 is 5.

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 and keep 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 -3, you add +3 instead.

Front

Calculate: 0 - 7

Back

-7

Front

Calculate: What is the absolute value of -13?

Back

13

Front

Back

-12

Front

A football team gained 9 yards and then lost 22 yards. Write the sum of integers for the overall change.

Back

9 + (-22) = -13

Front

The temperature was 6 degrees F and dropped 9 degrees F. What is the final temperature?

Back

-3 degrees F

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. If the positive integer is larger, the result is positive; if the negative integer is larger, the result is negative.