Subtracting Rational Numbers

Definitions

100

Define Integer

Positive and negative whole numbers including zero.

200

Define Absolute value

the distance a number is from zero

300

Define rational number

All positive and negative fractions, decimals and integers. 

400

Explain "Keep It, Switch It, Flip It"

Keep the first value, switch the subtraction to addition, and flip the last value to it's opposite.

500

Create and prove a  problem where you have a difference of negative three and a half. 

example: 4-7.5=-3.5

Integers

100

8 - 3

5

200

3 - 12

-9

300

-14 - 9

- 23

400

-12 - (-12)

0

500

-11 - 8 - (-10)

-9

Decimals

100

8.4 - 6.2

2.2

200

-4.8 - 7.6

-12.4

300

-20.5 - (-20.5)

0

400

0.41 - (-0.07)

0.48

500

Find the distance on a number line between -7.5 and -15.3

7.8

Fractions

100

^{1/3 - (-1/3)}

2/3

200

-3 1/3 - 5/6

-13/6 of -2 1/3

300

4 and 1/2 - 5 and 1/4

7/4 or 1 and 3/4

400

-8/9 - 1/3

-11/9 or -1 and 2/9

500

You make cookies with two different sugars. You need 2 and 2/3 cups of white sugar and 5/3 cup of brown sugar. What is the difference of amounts between the two sugars?

1 cup or 3/3 cups

Random (only choose after all questions in a category are done)

100

What sport(s) do I coach?

Girls volleyball

200

How many banners do I have in the gym?

3! 

Megan Paul has 2 banners for track 

& 

my 2020 girls volleyball team one banner

300

What other class(es) do I teach this year?

8th grade Pre-Algebra and flex

400

What sport did I play in college? 

*Bonus 100 for the school colors.

Soccer

purple and gold

500

When was the last time I taught 7th grade math?

14 years ago!