Divisibility Rule of 990

The divisibility rule for 990 is a method by which we can find out if a number is divisible by 990 or not without using the division method. Check whether 2970 is divisible by 990 with the divisibility rule.

Step 1: Check if the number is divisible by 2. Since 2970 is even, it is divisible by 2.

Step 2: Check if the number is divisible by 3. Add the digits of the number: 2 + 9 + 7 + 0 = 18, which is divisible by 3.

Step 3: Check if the number is divisible by 5. Since the last digit is 0, it is divisible by 5.

Step 4: Since 2970 is divisible by 2, 3, and 5, it is divisible by 990.

Learning the divisibility rule will help kids master division. Let’s learn a few tips and tricks for the divisibility rule of 990.

Know the prime factors of 990:

Memorize the prime factors of 990 (2, 3, 5, 11) to quickly check divisibility. Ensure the number is divisible by all these prime factors.

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.

Check divisibility in parts:

For large numbers, check divisibility by 2, then 3, then 5, and finally 11 to confirm divisibility by 990.
 

• Divisibility rule: The set of rules used to find out whether a number is divisible by another number or not.

• Prime factors: The prime numbers that multiply together to give a specific number, such as 2, 3, 5, and 11 for 990.

• Multiple: A number that can be divided by another number without a remainder.

• Even number: A number divisible by 2.

• Sum of digits: The total obtained by adding all the digits of a number, used to check divisibility by 3.