Adding and Subtracting Integers

Front

What is an integer?

Back

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

Front

What does it mean to add a negative integer?

Back

Adding a negative integer is the same as subtracting its absolute value.

Front

What is the result of 3 + -7?

Back

-4

Front

What is the result of -23 + (-7) + 5?

Back

-25

Front

If Emily descends to 40 feet below sea level and swims up 10 feet, what is her new depth?

Back

-30 feet (40 - 10 = 30 feet below sea level). Then she descends another 4 feet, making it -34 feet.

Front

What is the result of -14 + (-3)?

Back

-17

Front

How do you find the difference between two negative temperatures?

Back

Subtract the higher absolute value from the lower absolute value and keep the negative sign.

Front

What is the difference between 9 degrees below zero and 11 degrees below zero?

Back

2 degrees.

Front

What is the rule for subtracting integers?

Back

To subtract an integer, add its opposite.

Front

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

Back

8 (5 + 3 = 8).