Given Number: 18
Test a Number for Divisibility by Three (3):
• A Number is divisible by 3 if the Sum of the Digits in the Number is divisible by 3
Sum of the Digits in 18: 1+8 = 9
9 is divisible by 3, 9 ÷ 3 = 3
Therefore, 18 is divisible by 3
Note: 18 ÷ 3 = 6
Test a Number for Divisibility by Three (3):
• A Number is divisible by 3 if the Sum of the Digits in the Number is divisible by 3
Sum of the Digits in 18: 1+8 = 9
9 is divisible by 3, 9 ÷ 3 = 3
Therefore, 18 is divisible by 3
Note: 18 ÷ 3 = 6