Across
1
Single numeral from 0 to 9
2
Part of a circle's circumference
3
Result of addition
4
System of ordered marks for measuring
6
Corner point of a polygon
8
Rectangular array of numbers
9
Part of a line with two endpoints
Down
1
Number with digits after a point
5
Part of a whole number
7
Sum divided by count
10
Mathematical rule or equation