7th Grade: Operations with Rational Numbers

All about the 2010s

100

November 2010 saw the release of this innovative and interactive gaming controller

Xbox Kinect

200

The dress, a 2015 online phenomenon in which users perceived a dress as different colors, was what two colors in reality?

Black and Blue Dress

300

Vine gave us this slang word used enthusiastically when you throw something away.

Yeet

400

In 2016, this Major League Baseball team won the World Series, finally ending a 108-year drought.

Chicago Cubs

500

This film released in 2019 became the second highest grossing movie of all time.

Avenger Endgame

Adding Rational Numbers

100

3.15 + 2.25

5.40

200

0.38 + (-1.2)

-0.82

300

9/25 + (-17/25)

-8/25

400

-5/4 + 1/12

-1 1/6

500

To make a small amount of play dough, you can mix 1 cup of flour, 1/2 cup of salt and 1/2 cup of water. What is the total amount of ingredients added to make the play dough?

2 cups

Subtracting Rational Numbers

100

8/11 - 3/11

5/11

200

- 4/13 - 8/13

-12/13

300

-0.06 - (-0.86)

0.8

400

-5/12 - (-2/24)

-1/3

500

The snowfall in Rochester, NY in the winter of 1999-2000 was 91.5 inches. Normal snowfall is about 76 inches per winter. How much more snow fell in the winter of 1999-2000 than is normal?

15.5 inches

Multiplying Rational Numbers

100

5(1/3)

1 and 2/3

200

-3.2 x 5

-16

300

-1/6 (-2/3)

1/9

400

-2.57 (-.5)

1.285

500

Joe had a breakfast party. He invited four of his best friends. Each friend brought 3.4 cups of coffee. How much coffee did they all bring together?

13.6 cups

Dividing Rational Numbers

100

1/4 divided by 3/8

2/3

200

-20 divided by 0.5

-40

300

-15 divided by -5/8

24

400

Emma bought 2 and 1/2 yards of ribbon to make bows for 4 of her friends. How much yard will she use for each ribbon?

5/8 yards

500

List all the properties for adding, subtracting, dividing, and multiplying positives and negatives?

-Add: Same sign? Yes: Add, keep sign OR No: Subtract, sign of biggest number. -Subtract: Keep, change, opposite and use addition rules -Multiply/Divide: Same sign: Answer is positive Different sign: Answer is negative