Divisibility Rule of 622

The divisibility rule for 622 is a method to determine if a number is divisible by 622 without dividing. Let's check whether 1244 is divisible by 622 using its rule.

Step 1: Divide the number into two parts, the last digit and the rest. For 1244, the last digit is 4, and the rest is 124.

Step 2: Multiply the last digit by 62 (a factor of 622). 4 × 62 = 248.

Step 3: Add the result from Step 2 to the rest of the number. 124 + 248 = 372.

Step 4: If the result is divisible by 622, then the original number is also divisible by 622. Since 372 is not divisible by 622, 1244 is not divisible by 622.
 

Learning divisibility rules helps kids master division. Here are a few tips and tricks for the divisibility rule of 622.

Know the factors of 622:

Memorize the factors of 622 (1, 2, 311, 622) to help quickly check divisibility. If the result from the addition is a multiple of 622, the number is divisible by 622.

Use negative numbers when needed:

If the result after subtraction is negative, consider its absolute value for checking divisibility.

Repeat the process for large numbers:

For large numbers, repeat the divisibility process until reaching a smaller number that can be easily checked for divisibility by 622.

Use the division method to verify:

Use the division method to crosscheck results and ensure accuracy.
 

• Divisibility rule: A set of steps to determine if a number is divisible by another number without actual division.

• Factors: Numbers that multiply together to form another number. For example, factors of 622 are 1, 2, 311, and 622.

• Multiplication: The arithmetic operation of scaling one number by another. In this rule, the last digit is multiplied by 62.

• Addition: The arithmetic operation of finding the total or sum by combining numbers.

• Absolute value: The non-negative value of a number without regard to its sign, used when considering negative results.