Across
1
Mathematical rule or equation
2
Number greater than zero
3
Split into equal parts
4
Part of a line with two endpoints
10
Difference between highest and lowest values
11
Comparison of two quantities
Down
2
Parts per hundred
4
Collection of distinct elements
5
Reference line in a graph
6
Single numeral from 0 to 9
7
The number representing nothing
8
Line crossing from corner to corner
9
Result of raising a number to an exponent