The Real Number System

Front

What is the Real Number System?

Back

The Real Number System includes all the numbers that can be found on the number line, including rational and irrational numbers.

Front

Define 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 are rational numbers?

Back

Rational numbers are numbers that can be expressed as a fraction of two integers, where the denominator is not zero.

Front

What are irrational numbers?

Back

Irrational numbers are numbers that cannot be expressed as a simple fraction; their decimal representation goes on forever without repeating.

Front

Classify the number -78.

Back

Integer, Rational, Real.

Front

Classify the number 0.04769165821735......

Back

Irrational.

Front

Which of these numbers is an integer: 4.2, 4, -4.2, 4/3?

Back

4.

Front

What is a whole number?

Back

Whole numbers are non-negative integers, including zero (0, 1, 2, 3, ...).

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 (√2) is an example of an irrational number.