Across
1
Part of a line with two endpoints
4
Number with digits after a point
5
Result of raising a number to an exponent
6
Repeated addition
7
Difference between highest and lowest values
8
Collection of distinct elements
Down
1
Exact correspondence on both sides
2
Mathematical rule or equation
3
Number divisible only by 1 and itself
4
Single numeral from 0 to 9
6
Middle value in an ordered dataset