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anonymous

  • 5 years ago

iam 12 yrs old having trouble finding an easy way to find the least common multiple for number pairs.... help

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  1. anonymous
    • 5 years ago
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    how can we help?

  2. anonymous
    • 5 years ago
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    i just need help with my math its least common multiple

  3. anonymous
    • 5 years ago
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    do you have any examples you would like to work on or should we start working on random ones?

  4. anonymous
    • 5 years ago
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    i have one its the least common multiple of 8 and 20 its iether 2 or 4

  5. anonymous
    • 5 years ago
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    Ok, are you sure that you are trying to find the least common multiple or the greatest common factor?

  6. anonymous
    • 5 years ago
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    least common multiple it says it on the paper my teacher hand this to me and two others and told me i need it in by monday or i fail

  7. anonymous
    • 5 years ago
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    ok well least common multiple is a number that is BIGGER than the two numbers you have and both of the numbers you have can be multiplied into it

  8. anonymous
    • 5 years ago
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    since 2 and 4 are smaller than both 8 and 20, we know they cannot be LCMs of them

  9. anonymous
    • 5 years ago
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    this is all confusing to me

  10. anonymous
    • 5 years ago
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    a least common multiple can also be the same as the biggest of the numbers that you have

  11. anonymous
    • 5 years ago
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    well lets look at the name itself then:

  12. anonymous
    • 5 years ago
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    least means smallest common means that both relate to it and multiple means that if you multiply either of the numbers you have, you will get a multiple

  13. anonymous
    • 5 years ago
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    so a least common multiple is the smallest number that both of the numbers you have, can fit into a certain amount of times

  14. anonymous
    • 5 years ago
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    im just confused becuase i dont get how you find it

  15. anonymous
    • 5 years ago
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    and my teacher is no help

  16. anonymous
    • 5 years ago
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    ok well we know that it has to be at least the value of the biggest number you have

  17. anonymous
    • 5 years ago
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    so lets start their, and after we work through the most basic methods of finding a LCM, we can work on faster methods

  18. anonymous
    • 5 years ago
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    there*

  19. anonymous
    • 5 years ago
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    so 20 is the bigger of the two numbers (8 and 20)

  20. anonymous
    • 5 years ago
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    but 8 doesnt divide into 20 without a remainder or a decimal

  21. anonymous
    • 5 years ago
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    ok

  22. anonymous
    • 5 years ago
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    so that wont work

  23. anonymous
    • 5 years ago
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    why is math so cunfusing

  24. anonymous
    • 5 years ago
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    the next one we have is 40, because no number in between 20 and 40 will divide by 20, we have to jump all the way to 40

  25. anonymous
    • 5 years ago
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    it isint, it just takes practice

  26. anonymous
    • 5 years ago
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    so, is 40 divisible by 8?

  27. anonymous
    • 5 years ago
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    yes

  28. anonymous
    • 5 years ago
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    then that is your least common multiple, see how we started at 20, because it was the farthest down we can go without being lower than 8 and 20, and because it wasnt divisible by 8 we had to go up, and the next available number that was STILL divisible by 20 was 40, we went to 40, and 40 is divisible by both 20 and 8

  29. anonymous
    • 5 years ago
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    ok

  30. anonymous
    • 5 years ago
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    now what about 120 and 5

  31. anonymous
    • 5 years ago
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    well lets start at 120, because that is the lowest we can go right?

  32. anonymous
    • 5 years ago
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    i think

  33. anonymous
    • 5 years ago
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    anything lower than 120 will be LESS than our two numbers (120 and 5) so we can NOT go lower than 120

  34. anonymous
    • 5 years ago
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    so, we start at 120, is 120 divisible by 5?

  35. anonymous
    • 5 years ago
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    yess

  36. anonymous
    • 5 years ago
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    there ya go!

  37. anonymous
    • 5 years ago
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    wut i have no idea what is going on

  38. anonymous
    • 5 years ago
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    ok well do you get why we started at 120?

  39. anonymous
    • 5 years ago
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    no

  40. anonymous
    • 5 years ago
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    remember the definition of a LCM, it has to be bigger than both of your numbers or the same as the biggest of your numbers

  41. anonymous
    • 5 years ago
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    we have 5 and 120, since a LCM has to be bigger than both or equal to the biggest, it has to be at least 120

  42. anonymous
    • 5 years ago
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    i still dont get this al the numbers just look like letters to me

  43. anonymous
    • 5 years ago
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    literally like letters, or youre just confused?

  44. anonymous
    • 5 years ago
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    wait nevermind i wus looking at my english homework

  45. anonymous
    • 5 years ago
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    ....???

  46. anonymous
    • 5 years ago
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    i have alot of homework

  47. anonymous
    • 5 years ago
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    well how about we finish math first, since it is more important (you dont want to fail) and since you have me available and i have to go eventually

  48. anonymous
    • 5 years ago
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    i have to go right now cuz its 11:00 and i have somewhere to go tomarrow

  49. anonymous
    • 5 years ago
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    ok...

  50. anonymous
    • 5 years ago
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    so then you dont want to learn how to find LCMs?

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