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Ireland: choose your country
Second Class maths · A.8 · Place Value to 1,000

Mentally add 100 or subtract 100

Only the hundreds digit changes by one.

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See worked examples
  1. Fay asks: What is 100 more than 321?

    Answer: 421

  2. Kai wonders: What is 100 less than 474?

    Answer: 374

  3. Nia says: What is 100 less than 364?

    Answer: 264

Tip: Only the hundreds digit changes by one.

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