Exploring Rational and Irrational Numbers

Which set of numbers includes 0?

• Rational numbers

• Integers

• Whole numbers

• Natural numbers

What is a rational number?

• A number that cannot be written as a ratio

• A number that has a non-repeating decimal expansion

• A number that can be written as a fraction of two integers

• A number that cannot be expressed as a fraction

Which of the following is an example of a terminating decimal?

• Square root of 2

• -1/4

• 2/3

• Pi (π)

What type of decimal does -2/3 represent?

• Non-repeating decimal

• Terminating decimal

• Irrational decimal

• Repeating decimal

Which of the following is a rational number?

• Square root of 2

• Square root of 80

• Pi (π)

• Square root of 25

Which of the following numbers is considered a perfect square?

• 80

• 11

• 2

• 25

What makes a number irrational?

• It cannot be expressed as a fraction

• It is a whole number

• It has a repeating decimal expansion

• It can be expressed as a fraction

Which of the following is an example of an irrational number?

• 2/3

• -1/4

• Square root of 2

• 0.25

Why can't the square root of 2 be a rational number?

• It is a repeating decimal

• It can be expressed as a fraction

• It is a non-repeating, non-terminating decimal

• It is a whole number

What is an approximation for pi (π)?

• 22/7

• Square root of 11

• 3.14159

• Square root of 2