Add and Subtract 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 adding the opposite. For example, to subtract a negative integer, you add its positive counterpart.

Front

What is the result of 5 - (-6)?

Back

11

Front

How do you find the temperature change from 44°F to -56°F?

Back

Subtract the final temperature from the initial temperature: 44 - (-56) = 44 + 56 = 100 degrees.

Front

What is the temperature at 2 P.M. if it started at -7°F and dropped 12°F and then 5°F?

Back

-7 - 12 - 5 = -24°F.

Front

How do you calculate the distance between two negative elevations?

Back

Subtract the two elevations: |-8 - (-29)| = |-8 + 29| = |21| = 21 meters.

Front

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

Back

6

Front

What is the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, |-5| = 5.

Front

What happens when you add a positive integer and a negative integer?

Back

You subtract the smaller absolute value from the larger absolute value and take the sign of the integer with the larger absolute value.