Homework - Factors
21 February 2010, 10:16 AM
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Homework - Factors
My 9 year old has got a Factors sheet in his homework, with no explanation or instructions.
He needs to know the 8 factors of the following
Can anyone help and explain what a factor is ???
16
18
20
24
Ta
He needs to know the 8 factors of the following
Can anyone help and explain what a factor is ???
16
18
20
24
Ta
21 February 2010, 10:30 AM
#3
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16 is a composite number because it has factors other than 1 and itself. It is not a prime number.
The 5 factors of 16 are 1, 2, 4, 8, and 16.
Note: It has an odd number of factors because 16 is a square number (4 x 4).
The factor pairs of 16 are 1 x 16, 2 x 8, and 4 x 4.
The proper factors of 16 are 1, 2, 4, and 8 or,
if the definition you are using excludes 1, they are 2, 4, and 8.
The prime factors of 16 are 2, 2, 2, and 2. Note: There is repetition of these factors, so if the prime factors are being listed instead of the prime factorization, usually only the distinct prime factors are listed.
The only distinct prime factor (listing each prime factor only once) of 16 is 2.
The prime factorization of 16 is 2 x 2 x 2 x 2 or, in index form (in other words, exponential form), 24.
NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common.
THE ANSWER IS 2!!!!!!!!!!!!!!!!!!!!!!!!!!!!
No it still works
The 5 factors of 16 are 1, 2, 4, 8, and 16.
Note: It has an odd number of factors because 16 is a square number (4 x 4).
The factor pairs of 16 are 1 x 16, 2 x 8, and 4 x 4.
The proper factors of 16 are 1, 2, 4, and 8 or,
if the definition you are using excludes 1, they are 2, 4, and 8.
The prime factors of 16 are 2, 2, 2, and 2. Note: There is repetition of these factors, so if the prime factors are being listed instead of the prime factorization, usually only the distinct prime factors are listed.
The only distinct prime factor (listing each prime factor only once) of 16 is 2.
The prime factorization of 16 is 2 x 2 x 2 x 2 or, in index form (in other words, exponential form), 24.
NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common.
THE ANSWER IS 2!!!!!!!!!!!!!!!!!!!!!!!!!!!!
No it still works
21 February 2010, 10:32 AM
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This is a complete guess but someone will tell me that
A factor just a number that will go into the main number
e.g 16 is 2 x 2 x 4 OR 8 x 2
So think of all the numbers that will go into the list of numbers given and I think you end up with
2, 3, 4, 5, 6, 8, 9, 10
So 7 is excluded, for example, 'cos it won't go into any of the numbers.
d
A factor just a number that will go into the main number
e.g 16 is 2 x 2 x 4 OR 8 x 2
So think of all the numbers that will go into the list of numbers given and I think you end up with
2, 3, 4, 5, 6, 8, 9, 10
So 7 is excluded, for example, 'cos it won't go into any of the numbers.
d
Last edited by David Lock; 21 February 2010 at 10:37 AM.
21 February 2010, 10:33 AM
#5
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I am man/stupid enough to admit i haven't a baldy what factors are and even after reading Ian's post, i'm still none the wiser.
I got a B in my GCSE Math exam!
I got a B in my GCSE Math exam!
Last edited by Jamz3k; 21 February 2010 at 10:37 AM.
21 February 2010, 10:41 AM
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21 February 2010, 10:46 AM
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