Solve these clues to fill the grid.
- Any of the natural numbers or zero
- 3 Across
- A number that when multiplied by itself equals a given number
- 6 Across
- The divisor of a fraction
- 9 Across
- The boundary line encompassing an area or object
- 10 Across
- A sequence of numbers or letters that opens a ___ lock
- 14 Across
- A number written as one quantity divided by another, with a nonzero denominator.
- 15 Across
- A number that is added to another number
- 1 Down
- A unit of length equal to 1,760 yards or 5,280 feet
- 2 Down
- A mathematical statement that two expressions are equal
- 4 Down
- The extent of a 2-dimensional ___ enclosed within a boundary
- 5 Down
- To make ___ or easier or reduce in complexity or extent
- 6 Down
- Commodities offered for sale
- 7 Down
- A four-sided polygon
- 8 Down
- A mathematical notation indicating the number of times a quantity is multiplied by itself (plural)
- 11 Down
- A long thin implement made of metal or wood
- 12 Down
- One of the portions into which something is regarded as divided and which together constitute
- 13 Down