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Subtraction without borrowing

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The question

78 − 45

78 45 33
  1. 78 − 45, written in columns. Start at the RIGHT, with the ones.
  2. 8 take away 5 leaves 3. Write it in the ones.
  3. 7 take away 4 leaves 3. Write it in the tens.
  4. That is the whole sum: 78 − 45 = 33.

How it works.

  1. 01

    78 − 45, written in columns. Start at the RIGHT, with the ones.

  2. 02

    8 take away 5 leaves 3. Write it in the ones.

  3. 03

    7 take away 4 leaves 3. Write it in the tens.

  4. 04

    That is the whole sum: 78 − 45 = 33.

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