Across
1
Middle value in an ordered dataset
5
System of ordered marks for measuring
6
Amount of space an object occupies
7
Number divisible only by 1 and itself
8
Part of a whole number
12
Proven mathematical statement
13
Difference between highest and lowest values
Down
2
Longest side of a right triangle
3
Sum divided by count
4
Divisible by two
9
Number greater than zero
10
Number less than zero
11
Number that divides evenly into another