Divisibility Rules
A number is divisible by 6 if...
What is... divisible by both 2 and 3?
Vocab Check: In the example 32, 3 is called the _________ and 2 is called the __________.
What is... 3 is called the base and 2 is called the power ?
12*(6-2)
What is... 48 ?
Least Common Multiple between 15 and 30
What is... 30 ?
Find the prime factors of 45
3^2*5
A number is divisible by 9 if...
What is... the sum of the digits is divisible by 9 ?
24 =
What is... 2 x 2 x 2 x 2 = 16 ?
3^2+5(4-2)
What is... 19 ?
Least Common Multiple between 10 and 12
What is... 60 ?
What is
2^5
Name a four-digit number that is divisible by 4
What is... a number with the last two digits that are divisible by 4 ?
35 =
What is... 3 x 3 x 3 x 3 x 3 = 243 ?
3*6-4-:2
What is... 16?
Greatest Common Factor between 20 and 28
What is... 4 ?
Find the prime factors of 18
What is...
2*3^2
8,136 is divisible by...
(name all from 2, 3, 4, 5, 6, 8, 9, 10)
What is 2, 3, 4, 6, 8, and 9 ?
63 =
What is... 6 x 6 x 6 = 216 ?
5^2-15-:5
What is... 22 ?
Greatest Common Factor between 48 and 90
What is... 6 ?
(Hint: use a factor tree)
What is
2^2*3*5
7,650 is divisible by...
(name all from 2, 3, 4, 5, 6, 8, 9, 10)
What is... 2, 3, 5, 6, 9, 10 ?
106=
What is... 10 x 10 x 10 x 10 x 10 x 10 = 1,000,000 ?
4(3^2-8)-:2
What is... 2 ?
What is... 9 ?
Find the prime factors of 108
What is...
2^2*3^3