Across
1
Rectangular array of numbers
3
Total distance around a shape
5
Parts per hundred
11
Part of a circle's circumference
Down
2
Reference line in a graph
3
Number greater than zero
4
Single numeral from 0 to 9
6
Number divisible only by 1 and itself
7
Mathematical rule or equation
8
Collection of distinct elements
9
Difference between highest and lowest values
10
Math using letters for unknown values