Table of Contents

## How do you find the LCM of 4 and 5?

LCM of 4 and 5 by Prime Factorization Prime factorization of 4 and 5 is (2 × 2) = 22 and (5) = 51 respectively. LCM of 4 and 5 can be obtained by multiplying prime factors raised to their respective highest power, i.e. 22 × 51 = 20. Hence, the LCM of 4 and 5 by prime factorization is 20.

### What is the LCM of 5 10 and 5?

LCM of 5 and 10 by Prime Factorization Prime factorization of 5 and 10 is (5) = 51 and (2 × 5) = 21 × 51 respectively. LCM of 5 and 10 can be obtained by multiplying prime factors raised to their respective highest power, i.e. 21 × 51 = 10. Hence, the LCM of 5 and 10 by prime factorization is 10.

#### What is the HCF of 4 and 5?

1

What is the HCF of 4 and 5? The HCF of 4 and 5 is 1. To calculate the HCF of 4 and 5, we need to factor each number (factors of 4 = 1, 2, 4; factors of 5 = 1, 5) and choose the highest factor that exactly divides both 4 and 5, i.e., 1.

**What is the LCM of 10 and 40?**

Answer: LCM of 10 and 40 is 40.

**What is the LCM of 20 and 40?**

Answer: LCM of 20 and 40 is 40.

## What is the LCM of 3 and 10?

30

Answer: LCM of 3 and 10 is 30.

### How do you calculate the least common denominator?

To find the least common denominator, simply list the multiples of each denominator (multiply by 2, 3, 4, etc. out to about 6 or seven usually works) then look for the smallest number that appears in each list. Example: Suppose we wanted to add 1/5 + 1/6 + 1/15.

#### How do you find the LCM of a number?

To find the LCM of a set of numbers, take each number in the set and jot down a list of the first several multiples in order. The LCM is the first number that appears on every list.

**What is the LCM of 12 16 20?**

LCM (12, 16 and 20) = 240. The least common multiple 240 is a product of common & odd prime factors between the integers which is divisible by each one an integer of this same group. The step by step work for LCM of 12, 16 and 20 may useful to understand how to find LCM for two or three numbers.

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