Across
1
Result of addition
3
Longest side of a right triangle
4
Value that does not change
5
Part of a line with two endpoints
6
Part of a whole number
7
Number with digits after a point
9
Number divisible only by 1 and itself
Down
2
Mathematical statement of equality
5
Exact correspondence on both sides
8
Math using letters for unknown values
9
Parts per hundred