Across
1
System of ordered marks for measuring
2
Single numeral from 0 to 9
3
Part of a whole number
5
Number with digits after a point
6
Proven mathematical statement
7
Math using letters for unknown values
8
Exact correspondence on both sides
9
Number less than zero
Down
1
Result of addition
2
Line crossing from corner to corner
3
Mathematical rule or equation
4
Repeated addition
10
Result of multiplication