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What is an irrational number?

• An irrational number is a whole number.

• An irrational number can be expressed as a repeating decimal.

• An irrational number is a number that can be written as a fraction.

• An irrational number is a number that cannot be expressed as a simple fraction.

Give an example of an irrational number.

• √2

• π

• 3.14

• -1

What is the square root of 2 approximately?

• 2.0

• 1.41421356

• 1.414

• 1.5

Is the number pi (π) rational or irrational?

• irrational

• rational

• integer

• whole number

What is the square root of 9?

• 4

• 5

• 3

• 2

How can you identify if a number is irrational?

• A number is irrational if it has a repeating decimal.

• A number is irrational if it is greater than zero.

• A number is irrational if it is not a whole number.

• A number is irrational if it cannot be expressed as a fraction of two integers.

What is the value of the square root of 16?

• 3

• 4

• 6

• 5

Can the sum of two irrational numbers be rational?

• Yes, the sum of two irrational numbers can be rational.

• Yes, the sum of two irrational numbers is always rational.

• No, the sum of two irrational numbers is always irrational.

• The sum of two irrational numbers can never be rational.

What is the square root of 0.25?

• 2.0

• 1.0

• 0.25

• 0.5

Explain why the square root of a non-perfect square is irrational.

• The square root of a non-perfect square is irrational.

• The square root of a non-perfect square can be expressed as a fraction.

• The square root of a non-perfect square is always an integer.

• All square roots are rational numbers.