Operations with Rational Numbers

ConvertingFraction/Decimal

100

The fraction 2/5 as a decimal. 

What is - 0.4?

200

The decimal value equivalent to 7/10.

What is 0.7?

300

The fraction value equivalent to 0.75.

What is 75/100 or 3/4?

400

The world's smallest nation is Vatican City. Its area is 0.17 square miles. Express this value as a fraction.

What is 17/100?

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

3.15 + 2.25

What is 5.40?

200

0.38 + (-1.2)

What is -0.82?

300

9/25 + (-17/25)

What is -8/25 or -0.32?

400

2/5 + (-0.5)

What is -0.1?

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

8/11 - 3/11

What is 5/11 or 0.4545...?

200

- 4/13 - 8/13

What is -12/13 ?

300

-0.06 - (-0.86)

What is 0.8 ?

400

2/5 - (-0.5)

What is 0.9 ?

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?

Vocabulary

100

Any positive or negative whole number.

What is an integer?

200

Number's distance from zero. 

What is absolute value?

300

A decimal that stops. 

What is a terminating decimal?

400

A decimal that goes on FOREVER!!

What is a repeating decimal?

500

A number that can be written as a fraction. 

What is a rational number?

Comparing Rational Numbers

100

-1/2  _____ -0.458

What is <?

200

-0.75 ____  -3/4

What is =?

300

-1/2  _____  1/2

What is <?

400

3/4 _____ 0.746

What is >?

500

-4.5  _____ -4 and 3/5

What is >?