NATURAL NUMBERS AND INTEGERS

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Across
  1. 4. Seventy-eight in roman numerals.
  2. 7. A number divisible by 2 is called ……….. number.
  3. 8. The ............ of 24 and 18 is 6 (acronyms).
  4. 9. The name of the place of the number 3 in 134.568 (two words).
  5. 10. If you multiply two numbers with different signs the result is....
  6. 12. The ............. of -6 is 6 (two words).
  7. 13. 'Impar' in english.
  8. 14. 5 is a ................ of 15.
  9. 16. The first thing you have to solve in combined operations.
Down
  1. 1. The ……….. of 121 is 11 (two words).
  2. 2. The system used to measure time and angles.
  3. 3. A number that cannot be decomposed into factors.
  4. 5. The numbers -1, -6, 0, +5, +5 belong to the set of …..
  5. 6. To raise one power to another power we ……. The exponents.
  6. 11. 18 is a ................ of 6.
  7. 12. To multiply two powers with the same base, we …….. the exponents.
  8. 15. The ............ of 4 and 6 is 12 (acronyms).