横向
1
Parts per hundred
5
Number divisible only by 1 and itself
6
Repeated addition
8
Line segment connecting two circle points
纵向
2
Single numeral from 0 to 9
3
Math using letters for unknown values
4
Split into equal parts
7
Steepness of a line
Parts per hundred
Number divisible only by 1 and itself
Repeated addition
Line segment connecting two circle points
Single numeral from 0 to 9
Math using letters for unknown values
Split into equal parts
Steepness of a line