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Long Division

This is what is called an "algorithmic process". Below is the process written out in full. You will often see other versions. These are generally just a shortened version of the process below.

Let’s see how it is done with 425 ÷ 25

There are two definitions we must make first.

  • the number to be divided into is known as the dividend (425 from above)
  • The number which divides the other number is known as the divisor (25 from above)

  4 ÷ 25 = 0 remainder 4   The first number of the dividend is divided by the divisor.
     The whole number result is placed at the top. Any remainders are ignored at this point.
   25 × 0 = 0  The answer from the first operation is multiplied by the divisor. The result is placed under the number divided into
   4 – 0 = 4  Now we take away the bottom number from the top number.
     Bring down the next number of the dividend.
   42 ÷ 25 = 1 remainder 17  Divide this number by the divisor.
     The whole number result is placed at the top. Any remainders are ignored at this point.
   25 × 1 = 25  The answer from the above operation is multiplied by the divisor. The result is placed under the last number divided into.
   42 – 25 = 17  Now we take away the bottom number from the top number.
     Bring down the next number of the dividend.
   175 ÷ 25 = 7 remainder 0  Divide this number by the divisor.
     The whole number result is placed at the top. Any remainders are ignored at this point.
   25 × 7 = 175  The answer from the above operation is multiplied by the divisor. The result is placed under the number divided into.
   175 – 175 = 0  Now we take away the bottom number from the top number.
     There are no more numbers to bring down. The answer must be 17

 


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