Across
1
Sum divided by count
4
Single numeral from 0 to 9
5
Result of addition
7
Rectangle with four equal sides
8
Number with digits after a point
Down
1
Reference line in a graph
2
Result of multiplication
3
Middle value in an ordered dataset
6
Symbol representing unknown value
9
Value that does not change
10
Part of a line with two endpoints
11
Distance from center to edge of circle