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 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 the other 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 means finding the difference between them. This can be done by adding the opposite of the integer being subtracted.

Front

What is the rule for subtracting a negative integer?

Back

Subtracting a negative integer is the same as adding its positive counterpart. For example, a - (-b) = a + b.

Front

Calculate: -2 - (-8)

Back

6

Front

Calculate: -8 - 6

Back

-14

Front

Calculate: 12 - (-3)

Back

15

Front

Calculate: -4 + 9

Back

5

Front

Calculate: 19 - (-19)

Back

38

Front

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

Back

The result depends on the absolute values of the integers. If the positive integer has a greater absolute value, the result is positive; if the negative integer has a greater absolute value, the result is negative.