Math Crossword puzzle

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Across
  1. 1. a process of combining two or more numbers
  2. 4. an ordered pair of numbers a and b, written a / b where b does not equal 0.
  3. 6. angle An angle with a measurement of less than 90°
  4. 10. the total space taken up by a flat (2-D) surface or shape of an object
  5. 12. line- a horizontal line that has equally spread number increments.
  6. 13. a whole number (not a fractional number) that can be positive, negative, or zero
  7. 15. fractions where the denominator is 100
  8. 16. the space occupied within the boundaries of an object in three-dimensional space
  9. 17. division- the mathematical method for dividing large numbers into smaller groups or parts
  10. 19. the process of calculating the total of one number multiplied by another
  11. 22. a part of a whole
  12. 23. angle any angle greater than 90°
  13. 24. the opposite of multiplication
Down
  1. 2. the numbers, which consist of two parts namely, a whole number part and a fractional part separated by a decimal point
  2. 3. number- The numbers that include natural numbers and zero
  3. 5. to take away from a group or a number of things
  4. 7. area- the amount of space covering the outside of a three-dimensional shape.
  5. 8. An expression that represents repeated multiplication of the same factor
  6. 9. a pictorial representation or a diagram that represents data or values in an organized manner
  7. 11. the result of arithmetically adding numbers or quantities
  8. 14. the number of times a number is multiplied by itself.
  9. 16. the worth of each digit depending on where it lies in the number
  10. 18. the ratio of the circumference of any circle to the diameter of that circle.
  11. 20. a physical quantity
  12. 21. angle exactly equal to 90 degrees