Prime Numbers
What is a prime number?
A prime number can only be divided by 1 and itself.
What is a cubed number?
A number times itself 3 times.
1x1x1
What is a square number?
A number times itself.
1x1
6x6=
6x6=36
Write a factor pair of 36.
(1, 36), (2, 18), (3, 12), (4, 9) and (6, 6)
What is a composite number?
A number that can be divided by more than just 1 and itself.
53
125
42
16
120 divided by 12
10
What are common factors of 36 and 24?
1, 2, 3, 4, 6 and 12
Is 2 a prime or composite number?
2 is a prime number.
64
43
25
52
345x9=
345x9=3,105
What are the prime factors of 54?
2, 3
Is 46 a prime number or a composite number?
46 is a composite number, the factors are: 1, 46, 2, 23.
83
512
92
81
5,642 divided by 63
89.5
Write a complete factor tree for 96.
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List 5 prime numbers greater than 20.
23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97
1,728
123
121
112
563x69=
563x69=38,847
The common factor is 3 what 4 different numbers could it be?
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