Exploring Number Sets and Their Operations

Which of the following is NOT a real number?

• 0

• Infinity

• -5

• 3.14

What is the first natural number?

• 1

• 0

• 3

• 2

Which of the following is a whole number but not a natural number?

• 3

• 0

• 2

• 1

Which of these is an integer?

• -3.2

• 5

• 0.5

• 2.5

What type of number is -3.2?

• Natural number

• Whole number

• Integer

• Rational number

Which of the following can be expressed as a fraction?

• Pi

• Square root of 2

• 1.2

• Square root of 10

Which of these is a terminating decimal?

• 1.2

• 0.333...

• Pi

• Square root of 2

What is the defining characteristic of an irrational number?

• It repeats

• It can be written as a fraction

• It neither terminates nor repeats

• It terminates

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

• 3

• 1/3

• Square root of 2

• 5

Is the square root of 1 a rational or irrational number?

• Both

• Neither

• Irrational

• Rational