Across
1
Rectangle with four equal sides
3
Line crossing from corner to corner
6
Middle value in an ordered dataset
7
Rectangular array of numbers
8
Proven mathematical statement
9
Single numeral from 0 to 9
10
Math using letters for unknown values
11
Split into equal parts
Down
1
Result of addition
2
Mathematical rule or equation
4
Difference between highest and lowest values
5
Result of multiplication
6
Repeated addition
12
Reference line in a graph