Numbers

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Across
  1. 1. a ponctuation mark used to separate thousands, millions, ...
  2. 4. the operation of the plus sign
  3. 8. a positive or negative whole number
  4. 9. the operation when we say two times three
  5. 10. the operation of the minus sign
  6. 12. american word for index (Br)
  7. 14. the square rrot of two is a ... number
Down
  1. 2. adjective for numbers that are written in two parts, a whole number and a proper fraction
  2. 3. the inverse operation of the multiplication
  3. 5. adjective for decimals that have one digit or group of digits repeated forever
  4. 6. a number that can written as a fraction of two integers
  5. 7. adjective for numbers that can be divided exactly by two
  6. 11. 1, 3, 5 are instances of ... numbers
  7. 13. a British word to say zero