Math II (2Q): Practice Flashcard No. 4 - Irrational and Square Root

Front

What is an irrational number?

Back

An irrational number is a number that cannot be expressed as a simple fraction. It has a non-repeating, non-terminating decimal expansion.

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction, where both the numerator and the denominator are integers.

Front

TRUE or FALSE: The sum of two irrational numbers will always result in a rational number.

Back

False

Front

What type of number is a repeating decimal?

Back

Rational Number

Front

TRUE or FALSE: Perfect Squares are rational.

Back

True

Front

Which of the following radicals is rational? √2, √150, √144, √10

Back

√144

Front

What is a perfect square?

Back

A perfect square is a number that can be expressed as the square of an integer.

Front

Give an example of an irrational number.

Back

An example of an irrational number is √2 or π (pi).

Front

What is the square root of 144?

Back

The square root of 144 is 12.

Front

What is the square root of 2 approximately equal to?

Back

The square root of 2 is approximately equal to 1.414.