Across
1
Value that does not change
3
Number greater than zero
7
Symbol representing unknown value
8
Math using letters for unknown values
11
Middle value in an ordered dataset
Down
1
Round shape with all points equidistant
2
Rectangle with four equal sides
3
Total distance around a shape
4
Reference line in a graph
5
Parts per hundred
6
Mathematical statement of equality
9
System of ordered marks for measuring
10
Single numeral from 0 to 9