Category: Prime Numbers Factors and Multiples

Definitions Prime numbers A number is a prime number if its only factors are 1 and itself. 7 is a prime number. Its factors are 1 and 7 itself Some examples of prime numbers are 2, 3, 5, 7, 11, 13 and so on. 2 is the only even prime number. All other prime numbers are odd numbers Composite…

Divisibility Rule for 3 If the sum of the digits of a number is divisible by 3, then the number is divisible by 3. Some examples of numbers divisible by 3 are as follows. Divisibility Rule for 9 If the sum of the digits of a number is divisible by 9, then the number is divisible by…

Definition Divisibility − A number m is said to be divisible by another number n if n divides m completely without leaving a remainder. Divisibility Rule for 2 Some examples of numbers divisible by 2 are as follows. 24, 18, 68, 108, 184, 1020. Divisibility Rule for 5 Some examples of numbers divisible by 5 are 15, 35, 75, 125, 505, 1000. Divisibility Rule for 10 Some examples of…

Even numbers Even numbers are those numbers that are divisible by 2 All those numbers that have a 0, 2, 4, 6 or 8 in their ones place are even numbers. For example, 4, 16, 38, 464, 1070are even numbers as they are divisible by 2 Odd numbers Odd numbers are those numbers that are NOT divisible by…

This tutorial provides comprehensive coverage of prime numbers, factors and multiples based on Common Core CCSS and State Standards and its prerequisites. Students can navigate learning paths based on their level of readiness. Institutional users may customize the scope and sequence to meet curricular needs. This simple tutorial uses appropriate examples to help you understand prime numbers,…