Simplifying Expressions Crossword Puzzle

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Across
  1. 2. Numbers greater than zero
  2. 5. Repeated Addition
  3. 8. Splitting into equal parts or groups
  4. 11. Numbers less than zero
  5. 12. The answer after we divide one number by another
  6. 13. The positive distance a number is from zero
  7. 15. Numbers, symbols and operators grouped together that show the value of something
  8. 16. Symbols used in pairs to group things together
Down
  1. 1. Taking one number away from another number
  2. 3. It is written as a small number to the right and above the base number
  3. 4. The result of adding two or more numbers
  4. 6. The rules that say which calculation comes first in an expression
  5. 7. Finding the total, or sum, by combining two or more numbers
  6. 9. Positive or negative, large or small, whole numbers, fractions or decimal numbers
  7. 10. The result of subtracting one number from another
  8. 14. The answer when two or more values are multiplied together