GCF of 8 and 10 – How to find in Different Ways

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Created by: Team Maths - Examples.com, Last Updated: August 19, 2024

GCF of 8 and 10 – How to find in Different Ways

GCF of 8 and 10

The Greatest Common Factors (GCF) of 8 and 10 is 2. This is determined by identifying the largest numbers that divides both 8 and 10 without leaving a remainder. The prime factorization of 8 is 2³ (2 × 2 × 2) and the prime factorization of 10 is 2 × 5. The only common prime factor is 2, making it the GCF of 8 and 10.

GCF of 8 and 10

GCF of 8 and 10 is 2.

Methods to Find GCF of 8 and 10

  1. Prime Factorization Method
  2. Long Division Method
  3. Listing Common Factors

GCF of 8 and 10 by Prime Factorization Method

GCF-of-8-and-10-by-Prime-Factorization-Method

Prime Factorization of 8:

  • 8 = 2 × 2 × 2 (or 2³)

Prime Factorization of 10:

  • 10 = 2 × 5

Identify Common Factors:

  • The common prime factor between 8 and 10 is 2.

Determine the GCF:

  • Since the only common prime factor is 2, the GCF of 8 and 10 is 2.

GCF of 8 and 10 by Long Division Method.

GCF-of-8-and-10-by-Long-Division-Method

Divide the larger number (10) by the smaller number (8):

10 ÷ 8 gives a quotient of 1 and a remainder of 2.

Replace the larger number with the smaller number (8) and the smaller number with the remainder (2):

Now, divide 8 by 2.

8 ÷ 2 gives a quotient of 4 and a remainder of 0.

When the remainder is 0, the divisor at this step is the GCF:

The last divisor, which is 2, is the GCF.

Therefore, the GCF of 8 and 10 is 2.

GCF of 8 and 10 by Listing Common Factors

GCF-of-8-and-10-by-Listing-Common-Factors-1

List the factors of 8:

Factors of 8: 1, 2, 4, 8

List the factors of 10:

Factors of 10: 1, 2, 5, 10

Identify the common factors:

Common factors of 8 and 10: 1, 2

Determine the greatest common factor:

The greatest common factor is 2.

Therefore, the GCF of 8 and 10 is 2.

Why is the GCF of 8 and 10 important?

The GCF is important for simplifying fractions, solving problems involving ratios, and finding common denominators.

Can the GCF of 8 and 10 be greater than 2?

No, the GCF of 8 and 10 cannot be greater than 2 because 2 is the largest number that divides both 8 and 10 without leaving a remainder.

How is the GCF of 8 and 10 used in real-life situations?

The GCF is used in real-life situations such as dividing items into smaller sections, comparing quantities, and simplifying mathematical problems involving fractions.

Can the GCF of 8 and 10 be found using a calculator?

Yes, many calculators have a function to find the GCF of two numbers. Simply input the numbers 8 and 10 and use the GCF or GCD function.

What is 8 and 10 lowest common factor?

The lowest common factor of 8 and 10 is 1, as it is the smallest positive integer that divides both numbers without leaving a remainder.

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Practice Test

What is the Greatest Common Factor (GCF) of 8 and 10?

2

4

5

8

of 10

Which number is a common factor of both 8 and 10?

3

5

2

7

of 10

 How many common factors do 8 and 10 have?

1

2

3

4

of 10

What is the smallest common factor of 8 and 10?

1

2

4

5

of 10

Which of the following is not a common factor of 8 and 10?

1

2

4

5

of 10

The GCF of 8 and 10 is also a factor of which of the following numbers?

8

10

20

All of the above

of 10

If you multiply the GCF of 8 and 10 by 4, what do you get?

6

8

10

12

of 10

Which of the following pairs of numbers has the same GCF as 8 and 10?

12 and 18

15 and 25

14 and 21

16 and 20

of 10

What is the GCF of 8, 10, and 20?

2

4

8

10

of 10

The sum of the GCF of 8 and 10 and the smallest prime number is:

3

4

5

7

of 10

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