Guess that word!

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Across
  1. 2. - The four sections of a coordinate grid
  2. 3. - finding a value close to the actual answer
  3. 7. - A number that can be in ratio of two numbers
  4. 11. - A whole number that can be divided evenly by numbers other than one or itself.
  5. 14. Plane - a plane containing x and y axis
Down
  1. 1. - Horizontal bar over a decimal digit to indicate that it repeats
  2. 4. - the result of adding two or more numbers
  3. 5. - A whole number that can be a positive or a negative number
  4. 6. - The result of subtracting one number from another
  5. 8. - to make easier, lowest value
  6. 9. - to calculate the value of numeral expression
  7. 10. - The result of Multiplication
  8. 12. - the result of multiplying a number by an Integer
  9. 13. - The result of Division
  10. 15. - A number containing a decimal point written in Base Ten