Across
1
Difference between highest and lowest values
5
Repeated addition
6
Proven mathematical statement
7
Visual representation of data
11
Number that divides evenly into another
12
Symbol representing unknown value
Down
2
Line segment connecting two circle points
3
The number representing nothing
4
Number less than zero
8
Line touching circle at one point
9
Sum divided by count
10
Number divisible only by 1 and itself