Across
1
Repeated addition
5
Closed shape with straight sides
7
Result of multiplication
9
Math using letters for unknown values
Down
1
Rectangular array of numbers
2
Steepness of a line
3
Single numeral from 0 to 9
4
Line crossing from corner to corner
6
Difference between highest and lowest values
7
Number greater than zero
8
Result of addition
10
Part of a line with two endpoints