Operations with Rational Numbers

The Tough Section

100

3/8+(-1/2) =?

What is -1/8?

200

-2/3* 4/8= ?

What is -2/3?

300

1 3/8 + (-7/8) = 

What is 1/2? 

400

-15-(-14)=?

What is -29?

500

I am a value bigger than 1/4, smaller than 1/2 and expressed as a repeating decimal.

What is 1/3 or 0.33333?

Adding Rational Numbers

100

1.15 + 2.2

What is 3.35?

200

0.38 + (-1.2)

What is -0.82?

300

9/25 + (-17/25)

What is -8/25?

400

-5/12 + 1/12

What is -1/3?

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?

What is 2 cups?

Subtracting Rational Numbers

100

3/11 - 8/11

What is -5/11 ?

200

- 4/13 - 8/13

What is -12/13 ?

300

-0.06 - (-0.86)

What is 0.8 ?

400

-10/24 - (-2/24)

What is -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?

What is 15.5 inches?

Multiplying Rational Numbers

100

5*(1/3)

What is 1 and 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?

Dividing Rational Numbers

100

1/4 divided by 3/8

What is 2/3?

200

-20 divided by 0.5

What is -40?

300

-15 divided by -5/8

What is 24?

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

Sean has a loan of $8804.46 including interest. He makes payments of $209.63 each month on the simple interest loan. How many months will it take for Sean to repay his loan?

What is 42 months?