Real Number System

Front

What are natural numbers?

Back

Natural numbers are only positive numbers that aren't decimals, starting with number 1.

Front

What do integers include?

Back

Integers include positive AND negative numbers, but NO decimals.

Front

True or false: Repeating decimals are irrational.

Back

False. Repeating decimals are rational numbers.

Front

What is the only number that is a whole number, but not a natural number?

Back

0.

Front

True or false: ALL fractions are Rational.

Back

True. All fractions are rational numbers.

Front

What are whole numbers?

Back

Whole numbers include all natural numbers and the number 0.

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction, where both the numerator and denominator are integers.

Front

What are irrational numbers?

Back

Irrational numbers cannot be expressed as a simple fraction; they have non-repeating, non-terminating decimal expansions.

Front

Give an example of a rational number.

Back

1/2 is a rational number because it can be expressed as a fraction.

Front

Give an example of an irrational number.

Back

The square root of 2 is an example of an irrational number.