Exploring Rational and Irrational Numbers

What is a rational number?

• A number that cannot be written as a fraction

• A number that can be written as a fraction

• A number that is always negative

• A number that is always positive

Which of the following is a natural number?

• 3

• -1

• 0

• 0.5

What is the difference between whole numbers and natural numbers?

• Whole numbers include decimals

• Whole numbers include zero

• Whole numbers include fractions

• Whole numbers include negative numbers

Which of the following is a repeating decimal?

• 0.5

• 1.25

• 0.333...

• 2.75

How can 0.5 be written as a fraction?

• 1/2

• 1/3

• 1/5

• 1/4

Which of the following is an irrational number?

• 3

• 1/2

• 0.75

• √2

Why is π considered an irrational number?

• It can be written as a fraction

• It is a repeating decimal

• It is a whole number

• It does not terminate or repeat

Which of the following is a rational number?

• √7

• π

• 0.875

• √2

What is the cube root of 9 considered as?

• A rational number

• An irrational number

• A whole number

• A natural number

Which of the following statements is true?

• All repeating decimals are irrational

• All terminating decimals are irrational

• All repeating decimals are rational

• All whole numbers are irrational