Divisibility Rule of 122

The divisibility rule for 122 is a method by which we can find out if a number is divisible by 122 or not without using the division method. Check whether 2440 is divisible by 122 with the divisibility rule.  

Step 1: Check if the number is divisible by 2. Here, 2440 ends with 0, which is even, so it is divisible by 2.

Step 2: Check if the number is divisible by 61. To do this, sum the digits of the number (2 + 4 + 4 + 0 = 10). Since 10 is not divisible by 61, 2440 is not divisible by 61.

Step 3: Since 2440 is divisible by 2 but not by 61, it is not divisible by 122.

Learning the divisibility rule will help kids master division. Let’s learn a few tips and tricks for the divisibility rule of 122.

• Know the factors of 122: 122 can be factored into 2 and 61. Ensure a number is divisible by both to be divisible by 122.

• Memorize multiples of 61: Knowing multiples of 61 (61, 122, 183, 244, etc.) can help quickly check divisibility.

• Use digit sum for 61: If the sum of the digits of a number is divisible by 61, then that number is divisible by 61.

• Repeat the process for large numbers: Students should keep repeating the divisibility process until they reach a small number that is divisible by both 2 and 61.

• Use the division method to verify: Students can use the division method as a way to verify and crosscheck their results. This will help them to verify and also learn.

• Divisibility rule: The set of rules used to find out whether a number is divisible by another number without performing division.

• Factors: Numbers that are multiplied together to get another number. For example, 2 and 61 are factors of 122.

• Multiples: Results obtained by multiplying a number by an integer. For example, multiples of 122 are 122, 244, 366, etc.

• Integers: Numbers that include all whole numbers, negative numbers, and zero.

• Digit sum: The sum of all the digits in a number, used to check divisibility by certain numbers like 6.