BEDMAS
4 x (2 + 3)
20
List the factors of 12.
1, 2, 3, 4, 6, 12.
Is 25 a prime or composite number?
Composite.
It's factors are 1, 5, and 25.
Find the GCF of 12 and 15.
3
-3 + (-2) x 3
-9
List the first five multiples of 6.
6, 12, 18, 24, 30.
Is 17 a prime or composite number?
Prime.
It's factors are 1 and 17.
Find the LCM of 4 and 6.
12
20 ÷ (-2 - 8)
-2
List all the factors of 24.
1, 2, 3, 4, 6, 8, 12, 24.
Is 39 a prime or composite number?
Composite.
It's factors are 1, 3, 13, and 39.
Find the GCF of 20 and 24.
4
12 - 3 + (-6)
3
Is 117 a multiple of 3?
Yes. 1 + 1 + 7 = 9, which divides by 3. Therefore, 117 can be divided by 3, which means it is a multiple of 3.
Find the prime factorization of 42.
2 x 3 x 7
28
(4 - (-3)) x 8 + (-2)
54
True or false: all numbers have both a factor and multiple in common.
True. The number itself is always both a factor and multiple of whatever number you are working with.
Example:
Factors of 4 are 1, 2 and 4.
Multiples of 4 are 4, 8, 12...
4 is both a factor and multiple of 4.
Find the prime factorization of 52.
2 x 2 x 13
Find both the GCF and LCM of 12 and 16.
GCF: 4
LCM: 48