横向
1
U-shaped curve of a quadratic function
2
Single numeral from 0 to 9
4
Divisible by two
7
Symbol representing unknown value
8
Space between two intersecting lines
9
Result of multiplication
10
Parts per hundred
纵向
1
Number divisible only by 1 and itself
3
Number that divides evenly into another
5
Number greater than zero
6
Number less than zero
