Use some rules, then just guess.
All even numbers have 2 as a factor.
All numbers ending in 0 or 5 have 5 as a factor.
Add all the digits, if that is divisible by 3 or 9 then the original number will also have 3 or 9 as a factor.
If you know a list of squares, then (in your head) compare to the number you have.
A factor that is the same for two or more numbers is known as a "common factor" for those numbers.
All even numbers have 2 as a factor.
Yes, the greatest common factor of a pair of numbers can equal one of the numbers if one of the numbers is a factor of the other.
1 is the factor that is common to all numbers.
1 is a factor of all positive numbers.
The factor numbers are 3 and -17.
A factor that is the same for two or more numbers is known as a "common factor" for those numbers.
All even numbers have 2 as a factor.
One of the numbers is a factor of the other.
Yes, the greatest common factor of a pair of numbers can equal one of the numbers if one of the numbers is a factor of the other.
The HCF is always a factor of the LCM of two numbers. The HCF is a factor of both the numbers which are factors of their LCM. Thus the HCF is also a factor of the LCM of the two numbers.
Yes. Factors are just numbers. All numbers have factors.
1 is the factor that is common to all numbers.
One is a factor of all nonzero numbers.
The largest common factor of two or more numbers is the factor that goes into both numbers. Such as: the largest common factor of 2 and 4 is 2 The largest common factor of two or more numbers is the factor that goes into both numbers. Such as: the largest common factor of 2 and 4 is 2 That's the greatest common factor, or GCF.
A number that is a factor of two or more numbers is simply a common factor
All numbers with 12 as a factor have 2 as a factor, but not all have 10 as a factor.