What does it mean when one number divides another number?

We say one integer divides another if it does so evenly, that is with a remainder of zero (we sometimes say, “with no remainder,” but that is not technically correct). More formally, mathematicians write: If a and b are integers (with a not zero), we say a divides b if there is an integer c such that b = ac.

How do you tell if a number divides another number?

When one number can be divided by another number with no remainder, we say the first number is divisible by the other number. For example, 20 is divisible by 4 ( ). If a number is divisible by another number, it is also a multiple of that number. For example, 20 is divisible by 4, so 20 is a multiple of 4.

What is the disability rule of 6?

Divisibility Rule of 6 That is, if the last digit of the given number is even and the sum of its digits is a multiple of 3, then the given number is also a multiple of 6. Example: 630, the number is divisible by 2 as the last digit is 0. The sum of digits is 6+3+0 = 9, which is also divisible by 3.

What kind of number divides another exactly?

1) A number that divides another number evenly is called a factor of that number. For example, 16 can be divided evenly by 1, 2, 4, 8, and 16. So the numbers 1, 2, 4, 8, and 16 are called factors of 16.

What does divides mean discrete math?

Division. Definition. If a and b are integers with a = 0, then a divides b if there exists an integer c such that b = ac. When a divides b we write a|b. We say that a is a factor or divisor of b and b is a multiple of a.

How can you tell divisibility by 6?

Divisibility by 6 is determined by checking the original number to see if it is both an even number (divisible by 2) and divisible by 3. This is the best test to use. If the number is divisible by six, take the original number (246) and divide it by two (246 ÷ 2 = 123).

What is the highest number that divides exactly into two or more numbers is called?

Greatest Common Factor
The highest number that divides exactly into two or more numbers. It is the “greatest” thing for simplifying fractions!

Is the highest number which divides two or more numbers exactly?

HCF
HCF : The largest number that divides two or more numbers is the highest common factor (HCF) for those numbers.