Finding factors
A factor of a number is another whole number that can be repeatedly added and equal the original number.
E.g. A factor of 16 is a whole number that can be repeatedly added and will equal 16.
Factors of 16:
One way we can find factors is to repeatedly add whole numbers and see if they will add up to 16
Start with 1…
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 = 16
If we repeatedly add 1 we will get to 16 so Yes, 1 is a factor of 16.
Now try 2…
2 + 2 + 2 + 2+ 2 + 2 + 2 + 2 = 6
Yes, 2 is a factor of 16.
3 + 3 + 3 + 3 + 3 = 15
3 + 3 + 3 + 3 + 3 + 3 = 18
If you repeatedly add 3 you cannot get to 16 . So no, 3 is not a factor of 16 .
4 + 4 + 4 + 4 =16
Yes, 4 is a factor of 16.
5 + 5 + 5 = 15
5 + 5 + 5 + 5 = 20
No, 5 is not a factor of 16.
6 + 6 = 12
6 + 6 + 6 = 18
No, 6 is not a factor of 16.
7 + 7 = 14
7 + 7 + 7 =21
No, 7 is not a factor of 16.
8 + 8 = 16
Yes, 8 is a factor of 16.
9 + 9 = 18
No, 9 is not a factor of 16.
Soâ€
The factors of 16 are: 1, 2, 4, 8, 16
A factor of a number is another whole number that can be repeatedly added and equal the original number.
E.g. A factor of 16 is a whole number that can be repeatedly added and will equal 16.
Factors of 16:
One way we can find factors is to repeatedly add whole numbers and see if they will add up to 16
Start with 1…
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 = 16
If we repeatedly add 1 we will get to 16 so Yes, 1 is a factor of 16.
Now try 2…
2 + 2 + 2 + 2+ 2 + 2 + 2 + 2 = 6
Yes, 2 is a factor of 16.
3 + 3 + 3 + 3 + 3 = 15
3 + 3 + 3 + 3 + 3 + 3 = 18
If you repeatedly add 3 you cannot get to 16 . So no, 3 is not a factor of 16 .
4 + 4 + 4 + 4 =16
Yes, 4 is a factor of 16.
5 + 5 + 5 = 15
5 + 5 + 5 + 5 = 20
No, 5 is not a factor of 16.
6 + 6 = 12
6 + 6 + 6 = 18
No, 6 is not a factor of 16.
7 + 7 = 14
7 + 7 + 7 =21
No, 7 is not a factor of 16.
8 + 8 = 16
Yes, 8 is a factor of 16.
9 + 9 = 18
No, 9 is not a factor of 16.
Soâ€
The factors of 16 are: 1, 2, 4, 8, 16