Across
1
Mathematical rule or equation
5
Rectangular array of numbers
6
Difference between highest and lowest values
9
Line crossing from corner to corner
11
Single numeral from 0 to 9
12
Result of raising a number to an exponent
Down
2
Distance from center to edge of circle
3
Result of multiplication
4
Reference line in a graph
7
Symbol representing unknown value
8
Comparison of two quantities
10
Math using letters for unknown values