Carly and Brianna's Puzzle

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Across
  1. 4. The number of square units needed to cover the surface given.
  2. 8. A set of information collected about people or things,often to draw conclusions about them.
  3. 9. The point where the x-axis and y-axis intersect on the coordinate plane.
  4. 10. One of two numbers whose product is 1.
  5. 13. A number whose value does not change.
  6. 15. In statistics,the difference between the greatest and least values in a data set.
  7. 16. To write a fraction or expression in simplest form.
  8. 18. A face of a three-dimensional figure by which the figure is measured or classified.
  9. 19. graph A graph that uses vertical or horizontal bars to display data.
Down
  1. 1. The number that is multiplied by the variable in an algebraic expression.
  2. 2. A ratio comparing a number to 100.
  3. 3. A number that is multiplied by another number to get a product.
  4. 4. The sum of the items in a set of data divided by the number of items in the set.
  5. 5. A ratio that compares two quantities measured in two different units.
  6. 6. A letter or symbol used to represent a quantity that can be changed.
  7. 7. value,The distance of a number from zero on a number line.
  8. 11. A group of items.
  9. 12. Graph,A graph that uses sections of a circle to compare parts to the whole and parts to other parts.
  10. 14. The two perpendicular lines of a coordinate plane that intersect at the origin.
  11. 17. An element of the set of whole numbers and their opposites.