Exploring the Number System

What is a rational number?

• A rational number is a number that has a decimal representation that never ends.

• A rational number is a number that cannot be expressed as a fraction.

• A rational number is always an integer.

• A rational number is a number that can be expressed as a fraction a/b, where a and b are integers and b ≠ 0.

Which of the following is a rational number: 0.75, √2, or π?

• 1.5

• -3

• √4

• 0.75

Convert the fraction 3/4 to a decimal.

• 0.75

• 0.33

• 1.25

• 0.5

Convert the fraction 1/8 to a decimal.

• 0.25

• 0.5

• 0.75

• 0.125

Order the following numbers from least to greatest: 0.5, 1/4, 0.75.

• 1/4, 0.5, 0.75

• 1/4, 0.75, 0.5

• 0.75, 1/4, 0.5

• 0.5, 0.75, 1/4

Which of the following numbers is prime: 9, 11, or 15?

• 7

• 11

• 10

• 12

Identify the composite number from the following: 2, 3, 4.

• 2

• 4

• 3

• 5

What is the next number in the pattern: 2, 4, 6, 8, __?

• 10

• 12

• 14

• 16

Is the number 1 considered prime, composite, or neither?

• prime

• composite

• both

• neither

Which of the following fractions is greater: 2/3 or 3/5?

• 1/2

• 4/5

• 2/3

• 3/4