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

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.

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 adding a positive integer and a negative integer?

Back

The result depends on the absolute values; if the positive integer is larger, the result is positive, and if the negative integer is larger, the result is negative.

Front

What is the rule for subtracting integers?

Back

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

Front

What is the result of -5 + 3?

Back

-5 + 3 = -2.

Front

What is the result of 7 - 10?

Back

7 - 10 = -3.

Front

What is the result of -12 - (-4)?

Back

-12 - (-4) = -12 + 4 = -8.

Front

What is the result of 15 + (-7)?

Back

15 + (-7) = 8.

Front

What is the result of -20 + 5(3 + 8)?

Back

-20 + 5(11) = -20 + 55 = 35.