# What Is The Least Common Factor Of 6 And 4

What Is The Least Common Factor Of 6 And 4 – As you know, to progress with mathematical work we have to algebraically “correct” how a number or equation appears. For this we can use the greatest common factor and the least common multiple. The greatest common factor (GCF) is the largest number that is a factor of two or more numbers, and the least common multiple (MCM) is the smallest number that is a multiple of two or more numbers.

To see how these concepts are useful, let’s look at adding fractions. Before adding the fractions, we need to make sure the denominators are the same by creating an equivalent fraction:

## What Is The Least Common Factor Of 6 And 4

In this example, the least common multiple of 3 and 6 must be determined. In other words, “What is the smallest number that both 3 and 6 can divide equally?” Thinking a little, we realize that 6 is the most common multiple, because 6 divided by 3 is 2 and 6 divided by 6 is 1. The fraction (frac) is then adjusted to the corresponding fraction (frac) by multiplying the numerator and denominator by 2. Now they can be combined for a final value of (frac\).

## Mathpower 2 6 Greatest Common Factor 2 7 Lowest Common Multiple

In the context of adding or subtracting fractions, the lowest common multiple is referred to as the lowest common denominator.

In general, you must specify greater than or equal to two or more numbers to find their least common multiple.

It is important to note that there is more than one way to determine the least common multiple. One way is to simply list all multiples of the above values ​​and choose the lowest common value, as shown here:

This shows that the least common multiple of 8, 4, and 6 is 24, because it is the smallest number that can divide all 8, 4, and 6 equally.

## Least Common Multiple

Another common method is the prime factorization of each value. Remember, a prime number is divisible by 1 and only by itself.

Once the prime factors have been determined, list the common factors once, and multiply the remainder by the remaining prime factors. The result is the lowest common multiple:

The least common multiple can also be found by common (or repeated) division. This method is sometimes faster and more efficient than listing the multiples and finding the prime factors. Here is an example of finding the least common multiple of 3, 6 and 9 using this method:

Divide the numbers by any factor of three numbers. 6 has a factor of 2, so let’s use 2. Nine and 3 are not divisible by 2, so we’ll rewrite 9 and 3 here. Repeat this process until all the numbers reduce to 1. Then multiply all the factors together to get the lowest common multiple.

#### Least Common Multiple (lcm) — Definition & Examples

Since methods for finding the least common multiple have been introduced, we will have to change our way of thinking about finding the greatest common factor of two or more numbers. We will identify a value that is less than or equal to the numbers considered. In other words, ask yourself, “What is the greatest value that divides these two numbers?” Understanding this concept is essential to dividing and factoring polynomials.

The prime factor can also be used to determine the greatest common factor. However, instead of multiplying all the prime factors as we did for the lowest common multiple, we will multiply only the prime factors that the numbers share. The resulting product is the greatest common factor.

The least common multiple is greater than or equal to the numbers considered, and the greatest common factor is equal to or less than the numbers considered.

There are several techniques to find the LCM and GCF. The two most common strategies involve making a list or using prime factorization.

### Lesson 2: Greatest Common Factor And Least Common Multiple

For example, the LCM of 5 and 6 can be found by listing the multiples of (5) and (6\) and then identifying the smallest multiple divided by the two numbers.

Similarly, the GCF can be found by listing the factors of each number, and then identifying the greatest common factor. For example, the MKF of (40) and (32) can be found by listing the factors of each number.

For larger numbers, it will not be realistic to make a list of factors or multiples to identify the GCF or LCM. For large numbers, using the prime factorization technique is most efficient.

For example, when finding the LCM, start by finding the prime factorization of each number (this can be done by creating a factor tree). The prime factorization of (20) is (2times2times5), and the prime factorization of (32) is (2times2times2times2times2). Circle the common factors and count only these

#### Tentors Math Teacher Resources: Greatest Common Factor And Least Common Multiple

Now multiply all the factors (remember not to double the rounded (2)s). This becomes (2times2times5times2times2times2) which is (160). The LCM of (20) and (32) is (160).

When you find the GCF, start by listing the first factorization of each number (this can be done by creating a factor tree). For example, the prime factorization of (45) is (5times3times3) and the prime factorization of (120) is (5times3times2times2times2). Now simply multiply all the factors that the two numbers share. In this case, we would multiply (5time3) which equals (15). The MKF of (45) and (120) is (15).

The first factorization approach seems to be quite a long process, but it is guaranteed to save time when working with large numbers.

The first strategy is to simply list the factors of each number, and then find the largest factor that the two numbers have in common. For example, if we are looking for the MKF of (36) and (45), we can list the factors of the two numbers and identify the largest number in common.

### Least Common Multiple (simple How To W/ 9+ Examples!)

Listing the factors of each number and then identifying the greatest common factor works well for small numbers. However, when finding the GCF of large integers it is more efficient to use the prime factorization approach.

For example, when finding the GCF of (180) and (162\), we start by listing the first factorization of each number (this can be done by creating a factor tree). The prime factorization of (180) is (2times2times3times3times5), and the prime factorization of (162) is (2times3times3times3times3). Now find the common factors of the two numbers. In this case, the two numbers share one (2) and two (3)s, or (2times3times3). The result of (2times3times3) is (18), which is the GCF! This strategy is often more efficient for finding the GCF of large numbers.

GCF stands for “greatest common factor”. A GCF is defined as the largest number that is a factor of two or more numbers. For example, the MKF of (24) and (36) is (12), because the greatest factor of (24) and (36) is (12) of (24) and (36). (24) and (36) have other factors in common, but (12) is the largest.

There are several techniques for finding the least common multiple. Two common approaches are to list multiples and use prime factorization. Listing multiples is exactly what it sounds like, just list the multiples of each number and then find the smallest multiple that the two numbers have in common. For example, when you find the least common multiple of (3) and (4\), list the multiples:

### Skill 7: Least Common Multiple

Listing multiples is a great strategy when the numbers are relatively small. When the numbers are large, for example (38) and (42), let’s use the first factorization. Start by listing the prime factorization of each number (this can be done using a factor tree).

Now multiply all the factors (remember that you count the (2)s only once). This becomes (2times19times3times7) which is (798). The LCM of (38) and (42) is (798).

Deriving the LCM is a helpful skill when adding or subtracting fractions. Specifying the least common multiple results in a denominator that is the same for both fractions. For example, the common denominator of (frac+frac) would be (35) because (35) is the LCM of (7) and (5). The new fractions become (frac+frac), which is (frac).

Here we see that 2 is the only common factor of 16 and 42 and therefore their greatest common factor. We can then divide both numbers by 2 to reduce the fraction:

#### Cat Hcf And Lcm Questions Pdf [most Expected With Solutions]

(2=2) (note that we could write (2time1) but 1 is understood, or implied, and usually not necessary)

Remember, when calculating the LCM of two or more numbers, we list each prime factor shared by all the numbers once. Just as each of our numbers has a prime factor of 2, our MCM will also have 2 as one of its prime factors.

Now we are left with 3 out of 6, and we are left with two 2 out of 8. We multiply them to get

Note that although 2, 6, and 8 are all factors of 48, the solution is not D because 48 is not a least common multiple.

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As we can see above, 30 is the first (least) number that 3, 5 and 6 have in common among their multiples, so the least common.

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