Add and Subtract Integers

Front

What does it mean when a number is positive?

Back

A positive number is a number greater than zero, often represented by a yellow color in models.

Front

What does it mean when a number is negative?

Back

A negative number is a number less than zero, often represented by a red color in models.

Front

How do you add a positive integer to a negative integer?

Back

To add a positive integer to a negative integer, subtract the absolute value of the negative integer from the positive integer.

Front

What is the result of adding two integers with different signs?

Back

The result is the difference between the absolute values of the integers, and the sign of the result is the same as the integer with the larger absolute value.

Front

What is the result of adding two integers with the same sign?

Back

The result is the sum of their absolute values, and the sign of the result is the same as the common sign.

Front

What is the rule for subtracting a negative integer?

Back

Subtracting a negative integer is the same as adding its positive counterpart.

Front

What is the expression for the model where yellow is positive and red is negative?

Back

The expression represents the sum of the positive and negative integers, such as -6 + 6.

Front

How do you solve the expression 17 + (-9)?

Back

To solve 17 + (-9), subtract 9 from 17, resulting in 8.

Front

What does the equation -4 - (-2) = -2 represent?

Back

This equation shows that subtracting a negative number is equivalent to adding its positive value.

Front

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

Back

The result of 6 - (-5) is 6 + 5, which equals 11.