Factors
What are all the factors of 9?
1,3, and 9
What is the next multiple?
6,12, 18, 24, ___
30
Only even prime number
2
Composite numbers have more than ________ factors.
two
Rule: Add 7. First term: 4
4, 11, __, __, ___
18, 25, 32
What are all the factors of 15?
1,3,5, and 15
What is the next multiple?
9, 18, 27, 36, 45, _____
54
Prime numbers between 10 and 20
11, 13, 17, 19
First composite number
4
Rule: subtract 5. First term: 36
36, 31, __, __, __
26, 21, 16
Which factor is missing from the factors of 32?
1,2,4,16, and 32
8
What are the next multiples?
17,34,51,68,___, ___
85 and 102
Choose the prime number
A. 27 C. 51
B. 39 D. 53
D. 53
Is 85 composite? Explain
Yes, ends in a 5 so it is divisible by 5 or 5 is a factor.
Rule: Multiply by 2. First Term: 3
3, 6, __, __, __
12, 24, 48
Amy spent $42 to buy some pair of pants. Each pair cost the same whole dollar amount. How many pairs could she have bought?
A. 5 C. 8
B. 6 D. 9
B. 6
What is the first common multiple of 4 and 6?
12
Prime number whose tens digit is 1 less than its ones digit.
67 or 89
2 digit odd number not ending in the digit 5 between 50 and 60 that is composite.
51 or 57
Rule: Add 4, subtract 2.
9, 13, 11, 15, 13, __, __, __
17, 15, 19
What factor pair is missing from the factors of 48?
1 x 48 6 x 8
2 x 24
4 x 12
3 x 16
8 is a multiple of 16
True or False. Explain
False: The first multiple of a number is that number. 8 is a factor of 16
Largest 2 digit prime number.
97
The sum of 2 composite numbers can be prime?
True or False
True
Example 8 + 9 = 17
Example 21 + 22 = 43
1, 3, 6, 10, 15, 21, 28, 36, ___
45