Divisibility Rule of 388

The divisibility rule for 388 is a method by which we can find out if a number is divisible by 388 or not without using the division method. Check whether 1164 is divisible by 388 with this divisibility rule.

 
Step 1: Check if the number is divisible by 2, 4, and 97. If it is divisible by these three numbers, then it is divisible by 388. For 1164, check divisibility by 2, 4, and 97.

Step 2: 1164 is even, so it is divisible by 2. Then check divisibility by 4: the last two digits are 64, and 64 is divisible by 4. Finally, check divisibility by 97: divide 1164 by 97, which equals 12 with no remainder.

Step 3: Since the number is divisible by 2, 4, and 97, therefore, the number is divisible by 388.

Learning the divisibility rule will help kids to master division. Let’s learn a few tips and tricks for the divisibility rule of 388.

• Know the multiples of 388: Memorize the multiples of 388 (388, 776, 1164, 1552, etc.) to quickly check the divisibility. If the result from the division is a whole number, then the number is divisible by 388.
   
• Use the divisibility of smaller factors: If a number is divisible by 2, 4, and 97, it is divisible by 388. Use this to your advantage.
   
• Repeat the process for large numbers: Students should keep repeating the divisibility process for 2, 4, and 97 until they confirm divisibility by 388. For example, check if 2716 is divisible by 388. First, check divisibility by 2: 2716 is even. Then check divisibility by 4: the last two digits are 16, which is divisible by 4. Finally, check divisibility by 97: divide 2716 by 97, which equals 28 with no remainder. Thus, 2716 is divisible by 388.
   
• 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: A set of rules used to find out whether a number is divisible by another number or not. For example, a number is divisible by 388 if it is divisible by 2, 4, and 97.
   
• Multiples: Multiples are the results we get after multiplying a number by an integer. For example, multiples of 388 are 388, 776, 1164, etc.
   
• Factors: Factors are numbers that divide another number exactly without leaving a remainder. For example, factors of 388 are 2, 4, 97, and 388.
   
• Integers: Integers are 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.