Divisibility Rule of 640

The divisibility rule for 640 is a method by which we can find out if a number is divisible by 640 or not without using the division method. Check whether 7680 is divisible by 640 with the divisibility rule.

Step 1: Check if the number is divisible by 10. The number 7680 ends with 0, so it is divisible by 10.

Step 2: Check if the number obtained by removing the last three digits is divisible by 64. Here, the number is 7 (since 7680 becomes 7 when we remove the last three digits, 680).

Step 3: 7 is less than 64 and not divisible by 64, so 7680 is not divisible by 640.

Learn divisibility rules to help master division. Let’s learn a few tips and tricks for the divisibility rule of 640.

• Know the multiples of 640: Memorize the multiples of 640 (640, 1280, 1920, 2560…etc.) to quickly check the divisibility. If the number is a multiple of 640, then it is divisible by 640.

• Check divisibility by 10 and 64: Ensure the number is divisible by both 10 and 64. This is necessary for the number to be divisible by 640.

• 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 or not. For example, a number is divisible by 10 if it ends with 0.

• Multiples: Multiples are the results we get after multiplying a number by an integer. For example, multiples of 640 are 640, 1280, 1920, 2560, etc.

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

• Subtraction: Subtraction is a process of finding out the difference between two numbers by reducing one number from another.

• Division method: A mathematical operation where a number is divided by another number to check for divisibility or to find the quotient.