横向
1
Single numeral from 0 to 9
4
The number representing nothing
5
Number that divides evenly into another
6
Result of multiplication
8
Exact correspondence on both sides
11
Mathematical statement of equality
纵向
2
Power to which a number is raised
3
Distance from center to edge of circle
7
Steepness of a line
9
Line touching circle at one point
10
Math using letters for unknown values
12
Sum divided by count