Friday 20 January 2017

X-factor

I know if a number is a multiple of 10 because it has a 0 in the units column. Therefore, I know that 10 is a factor of 476,910 because of the 0 in the ones column.

What rules of finding factors do you know?

Use this website to help you: www.mathsisfun.com

18 comments:

  1. I know that 48 is a multiple of 2 because it in the two times table so it is a factor

    ReplyDelete
  2. 2=the last number is (0,2,4,6,8)

    3456 this is divisibility by 2

    ReplyDelete
  3. Sade and Edem 5Red2:53 pm, January 26, 2017

    I know that 686,089,655 is a multiple of 5 because it ends in 5

    ReplyDelete
    Replies
    1. Are there any other ways of figuring out if a the number is a multiple of 5?

      Delete
  4. for example 376 if the last digit is 0,2,4,6,8 then its a factor because the last digit is 6 and for the third one you just have to add all the numbers together for example 364 you add them

    ReplyDelete
    Replies
    1. Explain what you mean about finding out if a number is divisible by 3.

      Delete
    2. Adding all your digits and then if the answer is in the multiple of 3 then its divisible by 3

      Delete
  5. This is also a multiple of 5 because it ends in 0

    ReplyDelete
  6. This is also in the 3 and 9 times table I know this because I used my knowledge of the divisiblility rule

    ReplyDelete
  7. I know if a number is divisible by 5 because it ends in 5 or 0. I also know if it is a multiple of 9 because the sum has to be a multiple of 9, you do the same process with times 3 but it has to be a multiple of 3.

    ReplyDelete
  8. I know the rule for six.The number you have must be divisible by 3 and 4
    The rule for 5 is that the unit has to end in 5 or 0
    The rule for 4 is that the last two numbers are a mutiple of 4
    The rule for 3 is that the sum of the number is a mutiple of 3
    The rule for 2 is that the unit is even[2,4,6,8,0]

    ReplyDelete
  9. I know 48602 is a multiple of 2 and 4 because the whole number is even exeped 0 because that's a odd and even number even a square number.

    ReplyDelete
  10. 2 is a factor of 28492 because the last digit ends in 2 which is a multiple of 2 because any multiple of this number ends in 0,2,4,6,8.
    3 is a factor of 34713 because if I add all the digits together it makes 18 which is a multiple of 3 because 6x3=18.
    4 is not a factor of 634 because the last two digits show the numbers 3 and 4.

    ReplyDelete
  11. I know that 3412 is a factor of 2 because every time it has to end in 0,2,4,6 or 8 to be a factor of 2
    I know that 35170 is a factor of 10 and 5 because every time it has to end in 0 or 5 and it is a factor of 10 because every time it ends in 0

    ReplyDelete
  12. A factor is something that can be divisible by most numbers

    ReplyDelete
  13. This number 2134 is a factor of 2 because the rule says the end number should end in 02468

    ReplyDelete
  14. I know my 3/6/9/12/15/18/21/24/27/30/33/ I know my 5/10/15/20/25/30/35/40/45/50/55/60/ I know my 2/4/6/8/10/12/14/16/18/20/22/24

    ReplyDelete