Adding and Subtracting Integers

Front

What is the result of the expression -4 - (-2)?

Back

-4 and the opposite of -2, which simplifies to -4 + 2 = -2.

Front

When integers have the same sign, what operation do we perform to find their total?

Back

We find the sum of the integers.

Front

What does the number line represent in the equation (-4) + 7?

Back

It shows the movement from -4 to the right by 7 units, resulting in 3.

Front

If a seal dove 17 ft below sea level, then rose 5 ft, and dove another 3 ft, what is the final depth?

Back

The seal is at 15 ft below sea level.

Front

What is the result of the expression (-9) + (-3)?

Back

The result is -12.

Front

What is the definition of an integer?

Back

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

Front

How do you add two negative integers?

Back

You add their absolute values and keep the negative sign.

Front

What is the opposite of a negative integer?

Back

The opposite of a negative integer is its positive counterpart.

Front

What is the result of adding a positive integer to a negative integer?

Back

The result depends on the absolute values; if the positive integer is larger, the result is positive, and if the negative integer is larger, the result is negative.

Front

What is the rule for subtracting integers?

Back

To subtract an integer, add its opposite.