Quick Answer: What Is Difference Between GCF And LCM?

What is the GCF of 7 and 15?

Greatest common factor (GCF) of 7 and 15 is 1.

We will now calculate the prime factors of 7 and 15, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7 and 15..

What is the LCM of 3 and 4?

The Least Common Multiple (LCM) of some numbers is the smallest number that the numbers are factors of. Like the LCM of 3 and 4 is 12, because 12 is the smallest number that 3 and 4 are both factors for.

What is the difference between the LCM and GCF of 5 10 and 35?

Originally Answered: What are the differences between the LCM and GCF of 5, 10, and 35? LCM is 70 because this is the Lowest number that appears in the 5, 10, and 35 times tables. HCF of GCF is 5, since 5 is the Highest or greatest factor of 5, 10 , and 35.

What is the relationship between LCM and GCF?

The GCF-LCM Formula Simply put, the greatest common factor of a and b when multiplied to the least common multiple of a and b is equal to the product of a and b. That is, a and b are positive integers.

What is the formula of LCM?

The Least Common Multiple (LCM) of two integers a and b, usually denoted by LCM (a, b), is the smallest positive integer that is divisible by both a and b….Formula of L.C.M.Formulas To Calculate LCML.C.M formula for any two numbersL.C.M. = \frac{a\times b}{gcd\left(a,b\right)}1 more row

What is the HCF of 16 and 24?

8Consider the highest common factor of 16 and 24 again. The common factors are 1, 2, 4 and 8. So, the highest common factor is 8.

How do you find the GCF and LCM?

Since 1 divides into everything, then the greatest common factor in this case is just 1. When 1 is the GCF, the numbers are said to be “relatively” prime; that is, they are prime, relative to each other. Then the GCF is 1 and the LCM is 2 × 2 × 2 × 3 = 24.

What is the GCF of 7?

The GCF of 7 and 28 is 7. The greatest common factor is the greatest number that is a factor for both the numbers you’re comparing.

What is the LCM of two numbers?

LCM (Least Common Multiple) of two numbers is the smallest number which can be divided by both numbers. For example LCM of 15 and 20 is 60 and LCM of 5 and 7 is 35.

What is the LCM of 3 and 9?

Least common multiple (LCM) of 3 and 9 is 9.

What is the LCM of 5/6 and 9?

The LCM of 5,9,6 5 , 9 , 6 is the result of multiplying all prime factors the greatest number of times they occur in either number. The LCM of 5,9,6 5 , 9 , 6 is 2⋅3⋅3⋅5=90 2 ⋅ 3 ⋅ 3 ⋅ 5 = 90 .

What is the LCM of 3 and 8?

Answer and Explanation: The least common multiple of 3 and 8 is 24.

What is the fastest way to find the LCM?

How to Find the LCM – FAST!!!Step 1) Find the GCF for the two numbers. For 18 and 30, GCF is 6.Step 2) Divide that GCF into either number; it doesn’t matter which one you choose, so choose the one that’s easier to divide. Choose 18. … Step 3) Take that answer and multiply it by the other number. … Step 4) Celebrate …

How do u add LCM?

Here are the steps to follow:Find the Least Common Multiple of the denominators (which is called the Least Common Denominator).Change each fraction (using equivalent fractions) to make their denominators the same as the least common denominator.Then add (or subtract) the fractions, as we wish!

Why is HCF of 7 and 15?

Answer. because it is the greatest number that divides evenly into all of them……

What is the GCF of 7/15 and 21?

The common factors for 7,15,21 7 , 15 , 21 are 1 . The GCF (HCF) of the numerical factors 1 is 1 .

What is the LCM of 24 and 16?

The lowest common multiple (LCM) of 16 and 24 is 48 .