RATIONAL AND IRRATIONAL NUMBERS

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction 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; it cannot be written as a ratio of two integers.

Front

Is the square root of a perfect square rational or irrational?

Back

The square root of a perfect square is a rational number.

Front

Is the square root of a non-perfect square rational or irrational?

Back

The square root of a non-perfect square is an irrational number.

Front

What type of number is -√4?

Back

Rational (since -√4 = -2).

Front

What type of number is √7?

Back

Irrational.

Front

What type of number is the square root of 57?

Back

Irrational.

Front

What is a repeating decimal?

Back

A repeating decimal is a decimal fraction that eventually repeats the same sequence of digits.

Front

Is a repeating decimal rational or irrational?

Back

Rational.

Front

Give an example of a rational number.

Back

1/2, 3, -4, 0.75.