Answer:
A number is divisible by 3 if the sum of its digits is divisible by 3.
RULE FOR DIVISIBILITY BY 3
375?
375÷3
(3+7+5)÷3
15÷3 ✓
375, for instance, is divisible by 3 since sum of its digits (3+7+5) is 15. And 15 is divisible by 3.
NUMBER. EXPLANATION
12✓. 1+2=3 and 3 us divisible by
3
36✓. 3+6=9 and 9 is divisible by 3
102✓. 1+0+2=3 and 3 is divisible by3
100,002,000✓. 100,002,0001+0+0+ and 3 divisible
36✓. 3+6=9 and 9 is divisible by 3
