Quick and Easy Way to Divide a Number by 9


Condition:

Any number divided by 9

Methods:


Step 1: Write the last digit of the digit of the dividend as the last digit of the quotient

Step 2: Add the second last digit of the dividend to the last digit of the quotient, and put it as the second last digit of the quotient.
Step 3: Repeat step 2 for the next digit.
Step 4: Repeat step 2 again for another digit. Take note that, the sum (7 + 6 = 13) is greater than 9, hence the tens digit of the sum need to be added to another value place later on.
Step 5: This step is a little bit tricky. For the first digit of the dividend, we still repeat step 2, but we DO NOT put the answer ( 13 + 7 = 20) as the first digit of the quotient. Instead, we take it out, and divide it 9.
Step 6: We add the tens digit of 13 to the tens value place of the quotient. At the same time, we calculate 20 ÷ 9 = 2 remain 2.
 Step 7: Add the answer that we obtain from step 6 to the first digit of the quotient.
Lastly, we obtain the answer.

Practice:

  1. 2925 ÷ 9 =
  2. 19206 ÷ 9 =
  3. 143725 ÷ 9 =
  4. 4182732 ÷ 9 =

Answer:


1. 325;  2. 2134; 3. 15969r4; 4. 464748



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