Factors
List the factors of 12.
1, 2, 3, 4, 6, 12
Is 5 a factor of 27?
No
What are the common factors of 6 and 12?
1, 2, 3, 6
List 4 multiples of 6.
6, 12, 18, 24
This number is prime. A. 20 B. 15 C. 10 D. 5
What is D. 5?
List all the factors of 18.
1, 2, 3, 6, 9, 18
Is 9 a factor of 67?
No
What are the common factors of 15 and 21?
1, 3
List 4 multiples of 13.
13, 26, 39, 52
This number is composite. A. 4 B. 5 C. 11 D. 17
What is A. 4?
List all the factors of 27.
1, 3, 9, 27
Is 6 a factor of 132?
Yes, 6 x 22.
List the first 8 multiples. What are the common multiples of 3 and 4?
12 and 24
Is 47 a multiple of 6?
No.
This number is composite. A. 5 B. 13 C. 9 D. 17
What is C. 9?
List all the factors of 42.
1, 2, 3, 6, 7, 14, 21, 42
List the factor pairs of 64.
1, 64
2,32
4,16
8,8
Which number is NOT a common factor of 12, 42 and 84?
a) 2 b) 4 c) 6 d) 12
D12
What is the least common multiple of 4 and 7?
This number is prime. A. 48 B. 66 C. 10 D. 23
What is D. 23?
Jean spent $16 on t-shirts. If each shirt cost the same whole dollar amount, how many shirts could she have bought?
1, 2, 4, 8, 16
Derek bought a set of stamps. The number of stamps in the set he bought is divisible by 2, 4, 6, and 8. Which set could it be?
a) 80 b) 72 c) 67 d) 65
B 72
Justin has 20 pencils, 25 erasers and 40 paper clips. He organizes them into groups with the same number in each group. All the items in a group will be the same type. How many items can he put in each group?
1 or 5
Katy paid $15 for two charms. The price of each charm was a multiple of $3. What are the possible prices of the charms?
$3 and $12
or
$6 and $9
The only number that is neither prime nor composite.
What is 1?