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 negative, the result is more negative. If one is negative and one is positive, subtract the smaller absolute value from the larger absolute value and keep the sign of the integer with the larger absolute value.

Front

What does it mean to subtract integers?

Back

Subtracting integers is the same as adding the opposite. For example, to subtract a negative integer, you add its positive counterpart.

Front

Calculate: -14 + (-3)

Back

-17

Front

A submarine was at a depth of 150 meters below sea level. It ascended 30 meters and then descended 20 meters. What is its current depth?

Back

160 meters

Front

Calculate: 5 - 19

Back

-14

Front

Calculate: -8 + 20

Back

12

Front

The temperature at 6:00 was 9 degrees below zero. The temperature dropped to 11 degrees below zero at 8:00. What is the difference between temperatures?

Back

2 degrees

Front

What is the absolute value of an integer?

Back

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

Front

What is the rule for adding two negative integers?

Back

When adding two negative integers, the result is negative and you add their absolute values.