Across
1
Difference between highest and lowest values
4
Total distance around a shape
8
Symbol representing unknown value
9
System of ordered marks for measuring
10
Number with digits after a point
Down
2
Proven mathematical statement
3
Power to which a number is raised
4
Result of raising a number to an exponent
5
Divisible by two
6
Math using letters for unknown values
7
Line segment connecting two circle points
11
Number greater than zero