LCM for 45 and 63

The first method to find LCM for numbers 45 and 63 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 45 and 63 is 9, so

LCM = (45 × 63) ÷ 9

LCM = 2835 ÷ 9

LCM = 315

The second method to find LCM for numbers 45 and 63 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 45: 45, 90, 135, 180, 225, 270, 315, 360, 405

Multiples of 63: 63, 126, 189, 252, 315, 378, 441

So the LCM for 45 and 63 is 315

Another method to find LCM for numbers 45 and 63 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

• What is the GCF of 45 and 63
• What is 45/63 as a percent?