LCM for 40 and 800

The first method to find LCM for numbers 40 and 800 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 40 and 800 is 40, so

LCM = (40 × 800) ÷ 40

LCM = 32000 ÷ 40

LCM = 800

The second method to find LCM for numbers 40 and 800 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 40: 40, 80, 120, 160, 200, 240, 280, 320, 360, 400, 440, 480, 520, 560, 600, 640, 680, 720, 760, 800, 840, 880

Multiples of 800: 800, 1600, 2400, 3200, 4000, 4800, 5600, 6400, 7200, 8000, 8800, 9600, 10400, 11200, 12000, 12800, 13600, 14400, 15200, 16000, 16800, 17600, [...], 800

So the LCM for 40 and 800 is 800

Another method to find LCM for numbers 40 and 800 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

• What is 40% off 800?
• What is 40 percent of 800?