Test 1,000 for Divisibility by 3

Given Number: 1,000
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 1,000: 1+0+0+0 = 1
1 is not divisible by 3
Therefore, 1,000 is NOT divisible by 3
Note: Since 1,000 is not divisible by 3, it follows that 1,000 is also not divisible by any multiple of 3 (6, 9, 12, …)

The solution above and all other related solutions were provided by the Test for Divisibility by 3 Application.