common denominator between 8,3,6

Question

3 5/8 + 1 2/3 +1/6

Answer 1

The LCD is the LCM (Lowest Common Multiple) of the three numbers.

 

METHOD 1.

 Multiples of 8:   8  16  24  32  40  48

 Multiples of 3:   3   6   9  12   15   18   21   24   27   30   33   36   39   42

 Multiples of 6:   6  12  18  24  30  36  42  48

Lowest in all three lists:   24

 

METHOD 2.

  Prime factors of 8:    2   2   2

  Prime factors of 3:    3

  Prime factors of 6:    2   3

Factors list which include each of the above lists:    2   2   2   3

   2*2*2*3 = 24

Answer 2

24 would be the lowest common denominator

3 5/8 = 29/8 = 87/24

1 2/3 = 5/3 = 40/24

1/6 = 4/24  

 

Add them up:  87/24 + 40/24 + 4/24 = 131/24