Mathematics

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LESSON 1: PRIME NUMBERS AND COMPOSITE NUMBERS

Prime Numbers:

Prime numbers are numbers that are only divisible by 1 or itself.

Composite Numbers:

Composite numbers are numbers that have more than 2 factors.

PRIME NUBERS (1-100)

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97

0 and 1 are not a prime number, nor a composite number

LESSON 2: DIVISIBILITY RULES 2: Any number that is even, is divisible by 2

3: If the sum of the digits of the number are divisible by 4, so is the number

4: If the last 2 digits of a number are divisible by 4, so is the number

5: If the last digit ends in a 5 or 0, the number is divisible by 5

6: If the number is divisible by both 2 and 3, the number is divisible by 6

7: Do it old school

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