Square roots and real numbers

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. For example, √9 = 3 because 3 x 3 = 9.

Front

What is the difference between rational and irrational numbers?

Back

Rational numbers can be expressed as a fraction of two integers, while irrational numbers cannot be expressed as a simple fraction. For example, √2 is irrational.

Front

Is √24 a rational or irrational number?

Back

Irrational number.

Front

What is the square root of 81?

Back

9, because 9 x 9 = 81.

Front

Can zero be classified as a natural number?

Back

No, zero is not a natural number; it is classified as a whole number and an integer.

Front

What is the square root of a negative number?

Back

The square root of a negative number is not a real number; it is an imaginary number.

Front

What is the square root of 0?

Back

0, because 0 x 0 = 0.

Front

What are whole numbers?

Back

Whole numbers are non-negative integers, including 0 (0, 1, 2, 3, ...).

Front

What is an example of an irrational number?

Back

An example of an irrational number is π (pi) or √3.

Front

What is the square root of 16?

Back

4, because 4 x 4 = 16.