Real Numbers

What is an irrational number?

• A number that can be expressed as a simple fraction.

• A number that cannot be expressed as a simple fraction; it cannot be written as a ratio of two integers.

• A whole number that is not a fraction.

• A number that is always negative.

Which of the following numbers is a perfect square? (36, 50, 72, 98)

• 36

• 50

• 72

• 98

What is the area of a square with a side length of 5 cm?

• 20 cm²

• 25 cm²

• 30 cm²

• 15 cm²

What is the square root of a negative number?

• A real number

• An imaginary number

• A complex number

• A positive number

Estimate the square root of 50.

• Approximately 6.5

• Approximately 7.1

• Approximately 8.0

• Approximately 7.5

What is the value of @@\frac{1}{2} + \frac{1}{3}@@?

• @@\frac{5}{6}@@

• @@\frac{2}{5}@@

• @@\frac{3}{5}@@

• @@\frac{7}{6}@@

What is the square root of 36?

• 4

• 5

• 6

• 7

What is a rational number?

• A number that can be expressed as the quotient of two integers, where the denominator is not zero.

• A number that cannot be expressed as a fraction.

• A number that is always an integer.

• A number that has a non-repeating decimal representation.

What is the definition of a real number?

• A real number is any number that can be found on the number line, including both rational and irrational numbers.

• A real number is a number that can only be expressed as a fraction of two integers.

• A real number is a number that cannot be expressed as a decimal.

• A real number is any number that is positive and greater than zero.

What is a perfect square?

• A number that can be expressed as the square of an integer.

• A number that is the product of two different integers.

• A number that is always even.

• A number that has no integer square root.