Across
1
Difference between highest and lowest values
2
System of ordered marks for measuring
4
Number divisible only by 1 and itself
5
Number greater than zero
7
Exact correspondence on both sides
8
Symbol representing unknown value
10
Comparison of two quantities
Down
2
Collection of distinct elements
3
Parts per hundred
5
Result of multiplication
6
Round shape with all points equidistant
7
Part of a line with two endpoints
9
Number that divides evenly into another