Puzzle 1

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Across
  1. 1. to separate into parts, or groups
  2. 3. a branch of mathematics
  3. 4. process of finding how long, or how heavy something is
  4. 7. a diagram, a series of one or more points, lines, line segments, curves, or areas
  5. 9. a symbol written above or to the right of an mathematical expression
Down
  1. 2. is the number zero, a positive natural number, or the negation of a positive natural number
  2. 3. the process of adding numbers, or amounts together
  3. 5. the act of process of equating
  4. 6. to increase in number especially greatly, or in multiples
  5. 8. the study of numbers, shapes, and space