Classifying Real Numbers

Front

What is a whole number?

Back

A whole number is a non-negative number without fractions or decimals. Examples include 0, 1, 2, 3, etc.

Front

Is 0 a natural number?

Back

False. Natural numbers are positive integers starting from 1.

Front

Classify the number -3.

Back

Integer, Rational.

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction a/b, where a and b are integers and b is not zero.

Front

Classify the number 4.5.

Back

Real, Rational.

Front

Which of the following is NOT a whole number? -1, 0, 5, 10

Back

-1.

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero. Examples include -2, 0, 3.

Front

Is every integer a rational number?

Back

True. Every integer can be expressed as a fraction (e.g., 3 = 3/1).

Front

Classify the number 0.75.

Back

Real, Rational.

Front

What is an irrational number?

Back

An irrational number cannot be expressed as a simple fraction. Examples include √2 and π.