Adding and Subtracting Integers

Front

What is the sum of 45 + (-18)?

Back

27

Front

What is the sum of -8 + 20?

Back

12

Front

What is the difference between the greatest temperature and the least temperature if the greatest is 90 and the least is 0?

Back

90

Front

What is the absolute value of -12?

Back

12

Front

What is the result of 19 - (-19)?

Back

38

Front

Define an integer.

Back

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

Front

What is the rule for adding two integers with the same sign?

Back

Add their absolute values and keep the sign.

Front

What is the rule for adding two integers with different signs?

Back

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

Front

What is the rule for subtracting integers?

Back

To subtract an integer, add its opposite.

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.