What kind of number is this? Flashcards
Name the different kinds of numbers.
- Whole Numbers
- Even Numbers
- Odd Numbers
- Composite Numbers
- Prime Numbers
What are composite numbers?
A composite number is a natural number or a positive integer which has more than two factors.
For example, 15 has factors 1, 3, 5 and 15, hence it is a composite number.
What is a prime number?
a number that is divisible only by itself and 1.
(e.g. 2, 3, 5, 7, 11).
What is an odd number?
An odd number is a number that cannot be divided into two equal groups.
Odd numbers end in 1, 3, 5, 7, 9.
What is an even number?
An even number is a number that can be divided into two equal groups.
Even numbers end in 2, 4, 6, 8, and 0 regardless of how many digits they have (we know the number 5,917,624 is even because it ends in a 4!).