横向
1
Comparison of two quantities
3
Number with digits after a point
5
Symbol representing unknown value
6
The number representing nothing
7
Difference between highest and lowest values
纵向
2
Line segment connecting two circle points
3
Single numeral from 0 to 9
4
Mathematical rule or equation
8
Steepness of a line
9
Collection of distinct elements
10
Math using letters for unknown values
11
Split into equal parts