Question

find the LCM of each of the following sets of numbers by using division method. 1)25,40 2)36,72 3)15,60

Answer 1

LCM of 25 and 40 is 200
LCM of 36 and 72 is 72
LCM of 15 and 60 is 60

Answer 2

1. 25 , 40 divide by 5
5 , 8process end
5×8=40 lcm
2. 36 , 72 divide 3
12 , 24 divide 3
4 , 8 divide 2
2 , 4 divide 2
1 , 2 process end
3×3×2×2×2=72 lcm
3. 15 , 60
15 , 60 divide 5
3 , 12 divide 3
1 , 4 process end
5×3×4 = 60 lcm