Real Numbers: Introduction

The video tutorial introduces real numbers, explaining their representation on a number line. It covers integers, including positive and negative integers, and further classifies positive integers into prime and composite numbers. The tutorial also discusses rational numbers, highlighting their expression as fractions or decimals, and introduces irrational numbers, noting their non-terminating and non-repeating decimal forms. The session concludes with a summary of real numbers and a preview of the next topic on positive integers.

What are numbers without fractions on a number line called?

• Rational numbers

• Integers

• Irrational numbers

• Real numbers

Which of the following is a prime number?

• 8

• 5

• 6

• 4

What is the term for numbers that have at least three divisors?

• Natural numbers

• Whole numbers

• Composite numbers

• Prime numbers

Which of the following is a rational number?

• Square root of 2

• Pi

• 1/2

• e

What is a characteristic of irrational numbers?

• They are always negative

• Their decimal form is non-terminating and non-repeating

• They can be expressed as a ratio of two integers

• They are always whole numbers