Divisibility Rule of 140

The divisibility rule for 140 involves checking a number's divisibility by 140 without performing division. To determine whether 280 is divisible by 140, follow these steps:
 

Step 1: Check divisibility by 10. A number is divisible by 10 if it ends in 0. Since 280 ends in 0, proceed to the next step.
 

Step 2: Check divisibility by 14 (since 140 = 10 × 14). A number is divisible by 14 if it is divisible by both 2 and 7. 
 

Divisibility by 2: 280 is even, so it is divisible by 2.

Divisibility by 7: Use the rule for 7. Double the last digit: 0 × 2 = 0. Subtract from the remaining number: 28 - 0 = 28. Since 28 is a multiple of 7, 280 is divisible by 7.
 

Since 280 is divisible by 10, 2, and 7, it is divisible by 140.
 

Understanding the divisibility rule can help kids master division. Here are tips and tricks for the divisibility rule of 140:

• Know the Multiples of 140: Memorize the multiples of 140 (140, 280, 420, etc.) to quickly check divisibility.
   
• Use the Division Method to Verify: You can verify your results by dividing the number by 140 to ensure it divides evenly.
   
• Break Down the Components: Since 140 = 10 × 14, ensure the number is divisible by both 10 and 14 to confirm divisibility.
   

• Divisibility rule: A set of rules used to determine whether a number is divisible by another number.
   
• Multiples: Results obtained by multiplying a number by an integer. For example, multiples of 140 are 140, 280, 420, etc.
   
• Integers: Numbers including all whole numbers, negative numbers, and zero.
   
• Even number: A number divisible by 2, with no remainder.
   
• Subtraction: A process of finding the difference between two numbers by reducing one from the other.