Solutions by everydaycalculation.com

The LCM of 40 and 210 is 840.

- Find the prime factorization of 40

40 = 2 × 2 × 2 × 5 - Find the prime factorization of 210

210 = 2 × 3 × 5 × 7 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 2 × 2 × 2 × 3 × 5 × 7 - LCM =
**840**

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Find least common multiple (LCM) of: 80 & 420 20 & 105 120 & 630 200 & 1050 8 & 42 280 & 1470 80 & 210 40 & 420 120 & 210 40 & 630 200 & 210 40 & 1050 280 & 210 40 & 1470

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