Divisibility Rule of 642

The divisibility rule for 642 is a method by which we can determine if a number is divisible by 642 without using the division method. Check whether 1926 is divisible by 642 with the divisibility rule.

Step 1: Split the number into groups of three digits from the right. Here in 1926, this forms two groups: 1 and 926.

Step 2: Check if each group is divisible by 642. In this case, 926 is not divisible by 642, so the number 1926 is not divisible by 642.

Step 3: If both groups are divisible by 642, then the original number is divisible by 642. If not, then it is not divisible by 642.

Learning divisibility rules will help kids master division. Let’s learn a few tips and tricks for the divisibility rule of 642.

• Know the multiples of 642: Memorize the multiples of 642 (642, 1284, 1926, 2568, etc.) to quickly check the divisibility. If each group is a multiple of 642, then the original number is divisible by 642.

• Repeat the process for large numbers: Students should keep repeating the divisibility process until they reach a result that clearly indicates divisibility by 642.
  
  For example, if checking a larger number like 38520, split the number into groups: 38, 520. Check each group for divisibility by 642.

• 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 verify and also learn.

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

• Multiples: Results obtained by multiplying a number by an integer. For example, multiples of 642 include 642, 1284, 1926, etc.

• Integers: Numbers that include all whole numbers and their negative counterparts, as well as zero.

• Grouping: The process of dividing a number into groups of digits to apply a divisibility rule.

• Verification: The act of checking the accuracy of a calculation or result, often by using another method such as division.