Divisibility by 3 Workout
This workout has 6 problems.
You need to complete 90% of the questions correctly in 120 seconds.
Directions: Select each number that is divisible by 3.
Divisibility rule for 3
A number is divisible by 3 if it’s digits add to a number that is evenly divided by 3 (no remainder).
Example 1: Is 132 divisible by 3?
Answer: Yes! The sum of the digits 1+3+2=6, 6 is divisible by 3, so 132 is divisible by 3.
Example 2: Is 351 divisible by 3?
Answer: Yes! The sum of the digits 3+5+1=9, 9 is divisible by 3, so 351 is divisible by 3.
Example 3: Is 103 divisible by 3?
Answer: No! The sum of the digits 1+0+3=4, 4 is NOT divisible by 3, so 103 NOT is divisible by 3.
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