Across
1
Power to which a number is raised
7
Repeated addition
9
Number divisible only by 1 and itself
10
Distance from center to edge of circle
11
Split into equal parts
12
Steepness of a line
13
The number representing nothing
Down
2
Difference between highest and lowest values
3
Number greater than zero
4
Divisible by two
5
Single numeral from 0 to 9
6
Mathematical statement of equality
8
U-shaped curve of a quadratic function