Question
Find Least Common Multiple of 25 and 45 using ladder method..
Answer
LCM( 25, 45 ) = 225
Explanation
Step 1 : Place the numbers inside division bar:
| 25 | 45 |
Step 2 : Find a prime number which divides both numbers.
In this example we can divide by 5. If any number is not divisible by 5 write it down unchanged.
| 5 | 25 | 45 |
| 5 | 9 |
Step 4 : LCM is a product of numbers into L shape.
| 5 | 25 | 45 |
| 5 | 9 |
LCM = 5 · 5 · 9 = 225
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.
This page was created using
LCM Calculator