FreeMath

Square numbers ending in 5 Worksheet

A printable mental math worksheet for the trick "square numbers ending in 5". Multiply the first digit by the next number up, then write 25. 65² = 42 then 25 = 4225. 30 problems with an answer key.

30 problems · answer key on page 2 · free, no login

What is on the sheet

Use the trick: Multiply the first digit by the next number up, then write 25. 65² = 42 then 25 = 4225. Write only the answer. The answer key is on page 2.

  1. 1. 95² = ___
  2. 2. 25² = ___
  3. 3. 45² = ___
  4. 4. 115² = ___
  5. 5. 125² = ___
  6. 6. 55² = ___
  7. 7. 105² = ___
  8. 8. 35² = ___
  9. 9. 15² = ___
  10. 10. 95² = ___
  11. 11. 25² = ___
  12. 12. 65² = ___

The first 12 of 30 problems.

How to use it

  • Print one copy per day and set a timer for 1 minute.
  • Write the score at the top and try to beat it the next day.
  • Check with the answer key and practise the ones that were wrong.

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