Across
1
Parts per hundred
4
The number representing nothing
6
Mathematical rule or equation
7
Result of raising a number to an exponent
8
Reference line in a graph
Down
2
Space between two intersecting lines
3
Round shape with all points equidistant
5
Power to which a number is raised
7
Number divisible only by 1 and itself
9
Repeated addition
10
Mathematical statement of equality
11
Result of addition
12
Comparison of two quantities