Adding and Subtracting Integers Review

Front

What is an integer?

Back

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

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, |-5| = 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 sign. For example, -3 + -5 = -8.

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. For example, 5 + (-3) = 2.

Front

What is the result of -7 + 4?

Back

-7 + 4 = -3.

Front

What is the result of -10 + (-5)?

Back

-10 + (-5) = -15.

Front

How do you subtract integers?

Back

To subtract an integer, add its opposite. For example, 7 - 3 is the same as 7 + (-3).

Front

What is the result of 6 - 9?

Back

6 - 9 = -3.

Front

What is the difference between -4 and 2?

Back

The difference between -4 and 2 is |-4 - 2| = |-6| = 6.

Front

How do you rewrite the subtraction problem 5 - 12 as an addition problem?

Back

5 - 12 can be rewritten as 5 + (-12).