# Meet Mrs. Rowe

## Background

19 year math teacher with Gladbrook Reinbeck schools. Loves to work with students and see their new learning! Wants all students to be successful.

## Working with Subtracting Integers.

To subtract with negatives is the same thing as adding the inverse. Mrs. Rowe teaches the students KFC to help them remember.

What does KFC mean?

K Keep it

C Change the sign

When students apply the KFC rule, they can easily work with subtracting both positive and negative numbers. Let's take a look:

-3 - 5 is the same as -3 (Keep it) + (Flip to add) -5 (Change the sign). So that's -3 + -5. When signs are the same, you add and keep signs. Answer is -8!

Another example:

3-5. So that's 3 (Keep it) + (Flip to add) -5 (Change sign). So that's 3+-5. Since signs are different, find the difference and sign is largest absolute value. Answer is -2!

One final example:

-3 - -5. -3 (Keep it) + (Flip to add) 5 (Change sign). That is now -3 + 5. Signs are different so find the difference and sign is largest absolute value. Answer is 2!

## Real World Applications

Football. Gain of yard and loss of yards from the line of scrimmage. GR gained 5 yards. 0+5=5. They then lost 7 yards. From line of scrimmage, that's 5-7 or 5 + -7= -2 from line of scrimmage.

Temperature. Temperature was 15 degrees at noon and dropped 20 degrees by 6:00PM. 15-20 is 15 + -20. Temperature at 6:00PM was -5 degrees.