Determine the lowest common multiple of 3 and 5
4 Answers
baxthum8 | High School Teacher | (Level 3) Associate Educator
The lowest common multiple is the smallest (non-zero) multiple that is a multiple of 2 or more numbers.
Multiples of 3 are: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ...
Multiples of 5 are: 5, 10, 15, 20, 25, 30, 35, 40, 45, ...
Notice that both 15 and 30 are common multiples.
Solution: 15 is the lowest common multiple of 3 and 5.
justaguide | College Teacher | (Level 2) Distinguished Educator
The numbers 3 and 5 do not have any common prime factors.
The lowest common multiple of the two is the smallest number that is a multiple of 3 as well as 5.
This is equal to 3*5 = 15
15 is the lowest common multiple of 3 and 5
malkaam | Student, Undergraduate | (Level 1) Valedictorian
Determine the lowest common multiple of 3 and 5
Easiest way is to list out multiples of both and find the common one, that will be our least common multiple,
3 = 3 6 9 12 15 18
5 = 5 10 15 20 25 30
You can see from the above multiples that 15 is the LCM.
nisarg | Student, Grade 11 | (Level 1) Valedictorian
3: 3 6 9 12 15 18 21 24 27 30 33 36
5: 5 10 15 20 25 30 35
so 15 is the lowest common multiple