Factor Pairs
Find all the factor pairs of the number:
16
1 x 16
2 x 8
4 x 4
Is this number prime, composite, or neither?
35
Composite
What is the rule for this pattern?
11, 15, 19, 23
+ 4
What is the factor rule for 10?
If the number ends in a 0, it is divisible by 10.
8 x 5 =
40
Find all the factor pairs of the number:
24
1 x 24
2 x 12
3 x 8
4 x 6
Which of these numbers is composite?
11, 17, 22, 13
22
What is the rule of this pattern?
1, 2, 4, 8, 16
x 2
If the number is even, it is divisible by 2.
6 x 12 =
72
Find all the factor pairs of the number:
48
1 x 48
2 x 24
3 x 16
4 x 12
6 x 8
Which of these numbers is prime?
14, 15, 16, 17
17
Finish writing the last three terms of this pattern.
Rule: add 9
5, 14, 23, _ , _ , _
32, 41, 50
What is the factor rule for 4?
If the last two digits of the number are divisible by 4, the number is divisible by 4.
8 x 7 =
56
Find all the factor pairs of the number:
72
1 x 72
2 x 36
3 x 24
4 x 18
6 x 12
8 x 9
Name all of the prime numbers between the numbers
20 - 28
23
John gets stickers from the store every day. On the first day he had 8 stickers, after the second day he had 12 stickers, after the third day he had 16 stickers. If he continues this pattern how many stickers will he have after the 4th day?
20 stickers
What is the factor rule for 3?
If the sum of the digits are divisible by 3, then 3 is a factor
(2 x 6) x 9 =
108
Find all the factor pairs of the number:
120
1 x 120
2 x 60
3 x 40
4 x 30
5 x 24
6 x 20
8 x 15
10 x 12
Name all of the prime numbers between the numbers
39 - 49
41, 43, 47
Suzie is collecting shirts for a charity drive. On the first day she collected 5 shirts, on the second day she collected 10 shirts, on the third day she collected 20 shirts, on the fourth day she collected 40 shirts. If this pattern continues, how many will she have after the fifth day?
80 shirts
What is the factor rule for 6?
If both 2 and 3 are factors, then 6 is a factor.
72