Rules of mathematics

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Across
  1. 1. The simplified version of 6 over 10 is 3 over ...........
  2. 2. To find a quarter of any number, divide it by ........
  3. 4. The highest common factor of 9 and 12 is ........
  4. 6. Every fraction is also a .......... problem
  5. 7. To find 10% of any number, divide the number by ............
  6. 8. To divide a number by 100, move the decimal point 2 places to the
Down
  1. 1. Percent is really just a ............. over 100
  2. 3. 0.2 as a fraction is ............
  3. 5. To turn any decimal to a percentage, multiply the number by one .....
  4. 9. To find half of any number, divide it by .......