math definitions

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Across
  1. 2. is the answer of a addition problem
  2. 7. is the answer of a subtraction problem
  3. 8. is a fraction greater than 1
  4. 10. to make a calculated guess
  5. 12. a shape with 6 sides
  6. 14. is a number you can divide by 2
  7. 15. is the middle of the numbers
Down
  1. 1. is the answer of a division problem
  2. 3. is a triangle with 2 sides of the same length
  3. 4. to make bigger
  4. 5. numbers are the basic numbers and zero
  5. 6. is a shape with 3 sides
  6. 9. is the average
  7. 11. Is a collection of things
  8. 13. is the difference between the highest and lowest values