Divisibility Rule of 339

The divisibility rule for 339 is a method by which we can find out if a number is divisible by 339 or not without using the division method. Check whether 6780 is divisible by 339 with the divisibility rule.

Step 1: Divide the number into groups of the same size from right to left according to the length of 339, which is a 3-digit number. In 6780, group it as (6)(780).

Step 2: Multiply the first group by 3 and the second group by 1. Here, 6 × 3 = 18 and 780 × 1 = 780.

Step 3: Add the results from Step 2, i.e., 18 + 780 = 798.

Step 4: Check if the sum, 798, is divisible by 339. In this case, it's not, so 6780 is not divisible by 339.

Understand the multiples of 339: Memorize the multiples of 339 (339, 678, 1017, ... etc.) to quickly check divisibility. If the sum from the addition is a multiple of 339, then the number is divisible by 339.

Use the division method to verify:

Students can use the division method as a way to verify and cross-check 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 or not.

• Multiples: Multiples are the results we get after multiplying a number by an integer. For example, multiples of 339 are 339, 678, 1017, ...

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

• Grouping: The process of dividing a number into parts or groups, often used in divisibility rules.

• Verification: The process of confirming the accuracy of a solution, often by using a different method such as division.