Across
1
Number less than zero
3
Result of addition
5
Divisible by two
6
Comparison of two quantities
7
Total distance around a shape
8
Distance from center to edge of circle
11
Sum divided by count
Down
2
Parts per hundred
3
Exact correspondence on both sides
4
Symbol representing unknown value
9
Visual representation of data
10
Mathematical rule or equation
12
Number with digits after a point
13
Steepness of a line