What I Have Learned
In finding the common factors of numbers divisible by 3, 6, and 9, we can use
the following divisibility rules: Let us check.
a. A number is divisible by 3 if the sum of all the digits is divisible by
b. A number is divisible by if the number is divisible by both 2 and 3.
c. A number is divisible by 9 if the of all the digits is divisible or a multiple
of 9.
d. The sums of 1+ 5+ 3 = ?, by what numbers is it divisible with?
e. What smallest 3-digit number is divisible by both 3 and 6?
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Answer:
A. A number that is divisible by 3 if the sum of all the digits is divisible by