Operations with Rational Numbers

Operations with Rational Numbers

100

-2 + -3 + -4

What is -9?

200

-3 + 6 x (-2)

What is -15?

300

-2.8 - (-3.7) x 2.56

What is 6.672?

400

1/2 + 1/4 + (-1/8)

What is 5/8?

500

A plane descends 754.2 meters in 6 minutes. Find the change in elevation per minute.

What is -125.7 meters?

600

A submarine dove 35.8 feet below the surface of the ocean. At the same time a plane took off and ascended to 287.04 feet. What is the distance between the two vessels? 

What is 322.84 feet?

Adding Rational Numbers

100

-3.15 + (-2.25)

What is -5.4?

200

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?

What is 2 cups?

300

9/25 + (-17/25)

What is -8/25?

400

-5/12 + 1/6

What is -1/4?

500

0.38 + (-1.2)

What is -0.82?

600

- 1 2/5 + 3 1/8 

What is 

1 29/40?

Subtracting Rational Numbers

100

8/11 - 3/11

What is 5/11 ?

200

- 4/13 - 8/13

What is -12/13 ?

300

-0.06 - (-0.86)

What is 0.8 ?

400

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?

What is 15.5 inches?

500

-10/8 - (-1/12)

What is -1 1/6?

600

9.35 - 18.6

What is -9.25?

Multiplying Rational Numbers

100

5(1/3)

What is  1 2/3  ?

200

-3.2 x 5

What is -16?

300

-1/6 (-2/3)

What is 1/9?

400

Evaluate 2/3 * x for x = -6

What is -4 ?

500

Travis painted for 6 and 2/3 hours. He received $27 an hour for his work. How much was Travis paid for doing this painting job?

What is $180?

600

-2.07 (-0.46)

What is 0.9522?

Dividing Rational Numbers

100

1/4 divide -3/8

What is 2/3?

200

(-15)/(-5/8)

What is 24?

300

-28 divided by 0.4

What is -70?

400

Emma bought 2 and 1/2 yards of cording for the trim around the edge of a square pillow. How much will she use for each side of the pillow?

What is 5/8 yard?

500

-1/4 div 1 1/2

What is -1/6?

600

Identify the multiplicative inverse of -2 4/7 

What is 

-7/18?