Real Numbers and Square Roots

Front

What is a real number?

Back

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

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction or ratio of two integers, where the denominator is not zero.

Front

What is an irrational number?

Back

An irrational number is a number that cannot be expressed as a simple fraction; its decimal representation is non-ending and non-repeating.

Front

What is a square root?

Back

A square root of a number is a value that, when multiplied by itself, gives the original number.

Front

Is √25 a rational number?

Back

Yes, √25 = 5, which is a rational number.

Front

Is √10 a rational number?

Back

No, √10 is an irrational number.

Front

What type of number is -14?

Back

-14 is an integer, real number, and rational number, but it is not a natural number.

Front

What is the difference between a counting number and a whole number?

Back

Counting numbers start from 1 and go upwards (1, 2, 3,...), while whole numbers include 0 and all counting numbers (0, 1, 2, 3,...).

Front

What is an example of a non-ending, non-repeating decimal?

Back

An example of a non-ending, non-repeating decimal is π (pi).

Front

What is the classification of the number 0?

Back

0 is classified as a whole number, integer, rational number, and real number.