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 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 finding the difference between them. To subtract an integer, you can add its opposite. For example, to calculate a - b, you can compute a + (-b).

Front

What is the result of -8 + (-2)?

Back

-10

Front

What is the result of -6 - 2?

Back

-8

Front

If Emily is at -40 feet and swims up 10 feet, what is her new depth?

Back

-30 feet

Front

If Elsa withdraws $50, $60, and $17, what is the total amount withdrawn?

Back

$127

Front

If Elsa deposits $135 after her withdrawals, how much is left in her account if she started with $0?

Back

$8

Front

What is the temperature change from 15 degrees C to -10 degrees C?

Back

-25 degrees.

Front

How do you represent a decrease in value using integers?

Back

A decrease in value is represented by a negative integer.