Last updated on May 26th, 2025
The divisibility rule is a way to find out whether a number is divisible by another number without using the division method. In real life, we can use the divisibility rule for quick math, dividing things evenly, and sorting things. In this topic, we will learn about the divisibility rule of 123.
The divisibility rule for 123 is a method by which we can find out if a number is divisible by 123 or not without using the division method. Check whether 492 is divisible by 123 with the divisibility rule.
Step 1: Add the digits of the number together. For 492, add 4 + 9 + 2 = 15.
Step 2: Check if the sum obtained in Step 1 is divisible by 3. Since 15 is divisible by 3, the original number might be divisible by 123.
Step 3: Divide the original number by 123 to verify. 492 ÷ 123 = 4. As there is no remainder, 492 is divisible by 123.
Learning the divisibility rule will help kids to master division. Let’s learn a few tips and tricks for the divisibility rule of 123.
The divisibility rule of 123 helps us to quickly check if the given number is divisible by 123, but common mistakes like calculation errors lead to incorrect results. Here we will understand some common mistakes that will help you to understand.
Is 492 divisible by 123?
Yes, 492 is divisible by 123.
To determine if 492 is divisible by 123, we can follow these steps:
1) Take the first three digits of the number, which is the whole number in this case, 492.
2) Divide 492 by 123.
3) The result is exactly 4, with no remainder. Therefore, 492 is divisible by 123.
Check the divisibility rule of 123 for 615.
Yes, 615 is divisible by 123.
To check if 615 is divisible by 123:
1) Consider the whole number, 615.
2) Divide 615 by 123.
3) The result is exactly 5, with no remainder. Thus, 615 is divisible by 123.
Is -246 divisible by 123?
Yes, -246 is divisible by 123.
To determine if -246 is divisible by 123, we ignore the negative sign and check the absolute value:
1) Take the absolute value, which is 246.
2) Divide 246 by 123.
3) The result is exactly 2, with no remainder. Therefore, -246 is divisible by 123.
Can 370 be divisible by 123 following the divisibility rule?
No, 370 isn't divisible by 123.
To check if 370 is divisible by 123:
1) Consider the whole number, 370.
2) Divide 370 by 123.
3) The result is approximately 3.008, which is not an integer. Therefore, 370 is not divisible by 123.
Check the divisibility rule of 123 for 738.
Yes, 738 is divisible by 123.
To check the divisibility of 738 by 123:
1) Take the whole number, 738.
2) Divide 738 by 123.
3) The result is exactly 6, with no remainder. Thus, 738 is divisible by 123.
Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.
: She loves to read number jokes and games.