LCM for 100 and 1000

The first method to find LCM for numbers 100 and 1000 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 100 and 1000 is 100, so

LCM = (100 × 1000) ÷ 100

LCM = 100000 ÷ 100

LCM = 1000

The second method to find LCM for numbers 100 and 1000 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 100: 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200

Multiples of 1000: 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10000, 11000, 12000, [...], 1000

So the LCM for 100 and 1000 is 1000

Another method to find LCM for numbers 100 and 1000 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors: