4. the lowest value in a set of numbers through the highest value in the set
7. any mathematical process
8. the horizontal and vertical number lines used in a graph
9. a model or drawing based on a ratio
11. a graph that uses bars to display data
12. the number found most often

1. the positions of a single digit in the whole number
2. a network of lines used for locating points
3. any symbol that could represent a number
5. the use of rounding to determine a reasonable answer
6. graph that displays data using line segments
10. average