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 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 means adding the opposite. For example, to subtract a positive integer, add its negative counterpart.

Front

What is the sum of -4 and -5?

Back

-4 + -5 = -9.

Front

What is the sum of 8 and -5?

Back

8 + (-5) = 3.

Front

What is the difference between 3 and 8?

Back

3 - 8 = -5.

Front

How do you find the difference between two elevations?

Back

To find the difference between two elevations, subtract the lower elevation from the higher elevation, considering their signs.

Front

What is the profit if a team earns $275 and spends $55 on supplies?

Back

Profit = Earnings - Expenses = 275 - 55 = 220.

Front

What is the result of adding three negative integers: -4, -5, and -1?

Back

-4 + -5 + -1 = -10.

Front

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

Back

8 + (-5) + (-3) = 0.