Estimate Square Roots and Real Numbers

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 an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but does not include fractions or decimals.

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 square root of a number?

Back

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

Front

Estimate the square root of 90.

Back

Approximately 9.5.

Front

What is the difference between whole numbers and integers?

Back

Whole numbers are non-negative integers (0, 1, 2, ...), while integers include negative numbers as well (-1, -2, ...).

Front

Which subset does -√24 belong to?

Back

-√24 is a real number and an irrational number.

Front

What is the square root of 100?

Back

The square root of 100 is 10.

Front

Is -23 a rational number?

Back

Yes, -23 is a rational number because it can be expressed as -23/1.