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Divisibility by 12:
How do you know that a number is divisible by 12? Well, a number is divisible by 12 if it is both divisible by 3 and 4.
Example 1:
The first thing that we need to do is to inspect the given number if it is divisible by 12 or not.
Since the given number is an odd number, then the given number is not divisible by 12. An even number multiply by an odd number or an even number is always an even number. There's a remainder of 9 in the division. The answer or a quotient must be a whole number itself. You should not have a fraction or a remainder in the final answer.
Example 2:
The first thing that we need to do is to inspect the given number if it is divisible by 12 or not.
Since the given number is an even number, then we can inspect the last two digits of a given number if it is divisible by 4 or not.
Since 50 is not a multiple of 4, then the given number is not divisible by 4. Because of this, the given number is not divisible by 12. There's a remainder of 6 in the division. The answer or a quotient must be a whole number itself. You should not have a fraction or a remainder in the final answer.
Example 3:
The first thing that we need to do is to inspect the given number if it is divisible by 12 or not.
Since the given number is an even number, then we can inspect the last two digits of a given number if it is divisible by 4 or not.
Since 68 is a multiple of 4, then the given number is divisible by 4.
Next, inspect the given number if it is divisible by 3 or not as follows
Since 2 is not a multiple of 3, then the given number is not divisible by 3. Because of this, the given number is not divisible by 12. There's a remainder of 8 in the division. The answer or a quotient must be a whole number itself. You should not have a fraction or a remainder in the final answer.
Example 4:
The first thing that we need to do is to inspect the given number if it is divisible by 12 or not.
Since the given number is an even number, then we can inspect the last two digits of a given number if it is divisible by 4 or not.
Since 72 is a multiple of 4, then the given number is divisible by 4.
Next, inspect the given if it is divisible by 3 or not as follows
Since 9 is a multiple of 3, then the given number is divisible by 3. Because of this, the given number is divisible by 12. There's no remainder or a fraction in the division.
You should consider in studying the divisibility of a number because you will use these principles later when you will study higher Math subjects that involves the division of a number, simplifying fractions, and even factoring.
This method can also be used for negative integers as long as the given number is both divisible by 3 and 4. Again, there should be no remainder or a fraction in the division.