Across
1
Number divisible only by 1 and itself
3
Value that does not change
5
Single numeral from 0 to 9
6
Mathematical rule or equation
7
Number with digits after a point
8
Round shape with all points equidistant
9
Sum divided by count
11
Visual representation of data
12
Part of a whole number
13
Steepness of a line
Down
1
Lines that never intersect
2
Number that divides evenly into another
4
Repeated addition
10
Comparison of two quantities