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, the square root of 9 is 3, because 3 x 3 = 9.

Front

What is the square root of 289?

Back

17

Front

What is the solution to the equation x² = 144?

Back

x = 12 and x = -12.

Front

What are the classifications of the number 0?

Back

0 is classified as a whole number, rational number, and integer, but not a natural number.

Front

Classify the number -23.

Back

-23 is a real number, rational number, and integer.

Front

What is the square root of 81?

Back

9

Front

What type of number is √81?

Back

√81 is a real number and an integer, but not an irrational number.

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 goes on forever without repeating.

Front

What is the difference between whole numbers and natural numbers?

Back

Whole numbers include all natural numbers and zero, while natural numbers are the positive integers starting from 1.