Highest common factor
for 6th grade
Identify the Highest Common Factor (HCF) for the given sets of numbers
Find the highest common factor (HCF)
of sets of 2 or 3 numbers
To find the highest common factor (HCF) of two or more numbers, you need to find the largest factor that is common to all of the numbers. Here's how to do it:
- Find the factors of each number.
- Identify which factors are common to all the numbers.
- Determine the largest of these common factors.
For example, find the HCF of 12 and 16:
Factors of 12: 1, 2, 3, 4, 6, 12
Factors of 16: 1, 2, 4, 8, 16
Common factors of 12 and 16: 1, 2, 4
The common factors of 12 and 16 are 1, 2, and 4. The greatest common factor among these factors is 4. Therefore, the HCF of 12 and 16 is 4.
Here's another example. Find the HCF of 18 and 24:
Factors of 18: 1, 2, 3, 6, 9, 18
Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24
The common factors of 18 and 24 are 1, 2, 3, and 6. The greatest common factor among these factors is 6. Therefore, the HCF of 18 and 24 is 6.
It's important to note that when dealing with larger numbers, it may be more efficient to use prime factorization to find the HCF.
In this topic you are asked to find the highest common factor of sets of 2 or 3 numbers ranging between 6 and 108.
Below is a table showing the first 8 question answer pairs for the topic "Highest common factor" as used in the lessons for this topic. Our games and tests for the topic use these 8 items plus 8 additional question answer pairs.
The topic "Highest common factor" is in the category Number for 6th grade (ages 11 to 12).
Revise 'Highest common factor' with one of our games for 6th grade
Each of our math topics for secondary are made up of between 6 and 20 question and answer pairs (both the written form and a robot voice speaking those questions and answers). Each topic can be used with all the activities on the site.
Number * Algebra * Ratio proportion rate * Geometry & measures * Probability * Statistics *
