8.2 Understand Real Numbers System

Front

What are the four main sets of real numbers?

Back

Natural Numbers, Whole Numbers, Integers, Rational Numbers, Irrational Numbers.

Front

Define Natural Numbers.

Back

Natural Numbers are the set of positive counting numbers: 1, 2, 3, 4, ...

Front

What is the definition of Rational Numbers?

Back

Rational Numbers are numbers that can be expressed as a fraction a/b, where a and b are integers and b ≠ 0.

Front

What are Irrational Numbers? Give an example.

Back

Irrational Numbers cannot be expressed as a simple fraction. Example: √2, π.

Front

True or False: Every natural number is a whole number.

Back

True.

Front

True or False: All integers are rational numbers.

Back

True.

Front

Classify the number -5. What type of number is it?

Back

It is an Integer and also a Rational Number.

Front

What is the difference between Rational and Irrational Numbers?

Back

Rational Numbers can be expressed as fractions, while Irrational Numbers cannot.

Front

Classify the number 0.75. What type of number is it?

Back

It is a Rational Number.

Front

What is the set of Whole Numbers?

Back

Whole Numbers include all Natural Numbers and the number 0: 0, 1, 2, 3, ...