Types of Numbers.

Question 1

What are natural numbers?

Answer 1

Natural numbers are whole numbers greater than zero.

Question 2

Give 4 examples of natural numbers.

Answer 2

These numbers are 1, 2, 3, and 4……numbers that you can physically count.

Question 3

What are integers?

Answer 3

Integers are whole numbers, both positive and negative, including zero.

Question 4

What are positive integers?

Answer 4

Positive integers are integers greater than zero (for example, 1, 2, and 3).

Question 5

What are negative integers?

Answer 5

Negative integers are integers less than zero (for example, -1, -2, and -3).

Question 6

What are rational numbers?

Answer 6

Rational numbers are numbers that can be written as a fraction where both the numerator and denominator are integers.

Question 7

Examples of rational numbers.

Answer 7

1/3.
22/7.
123654987/100000000.

Question 8

What are irrational numbers?

Answer 8

Irrational numbers are numbers that cannot be written as a fraction.

Question 9

Examples of irrational numbers.

Answer 9

√ (square root).
e (Euler’s number).
π (pi symbol).
Φ (the golden ratio).

Question 10

What are real numbers?

Answer 10

Real numbers are numbers that you have come across i.e. ALL rational and irrational numbers.

Question 11

What are square numbers?

Answer 11

Square numbers are integers that can be written as the square of some other integers i.e. a product of an integer multiplied by itself.

Question 12

What are Surds?

Answer 12

Surds are numbers left in the form √n, where n is a positive integer that is not a square number.

Question 13

What are prime numbers?

Answer 13

Prime numbers are numbers greater than 1 that can only be divided by themselves and 1 to give an integer answer.
(1 IS NOT A PRIME NUMBER!).