Subtracting Integers

Front

What is the rule for subtracting integers?

Back

Change to addition and use the opposite of the second number.

Front

Convert -9 -(-5) into an addition problem.

Back

-9 + 5

Front

Convert 12 - 20 into an addition problem.

Back

12 + (-20)

Front

5 - 2

Back

3

Front

-3 - 2

Back

-5

Front

-7 - 2

Back

-9

Front

19 - (-19)

Back

38

Front

-7 - (-7)

Back

0

Front

The temperature on a cold winter day starts out at 10 degrees, but it drops rapidly 24 degrees due to a strong cold front moving in. What is the current temperature?

Back

-14

Front

I had $-25 in my account. I deposited $70 into my account. How much money do I have now?

Back

$45