Solve these clues to fill the grid.
- A mathematical statement that two expressions are equal
- 3 Across
- The act of rewriting something
- 4 Across
- A word that expresses a meaning ___ to the meaning of another word (plural)
- 8 Across
- Any of the natural numbers or zero (plural)
- 11 Across
- A real number regardless of its sign
- 12 Across
- A quantity that does not vary (plural)
- 13 Across
- A person who pleads for a cause or propounds an idea
- 1 Down
- An athlete who plays only when a starter on the team is replaced
- 2 Down
- Something that is likely to vary
- 5 Down
- Strength or the ability to control things
- 6 Down
- Bottom part something stands on; a safe spot in baseball
- 7 Down
- To make ___ or easier or reduce in complexity or extent
- 9 Down
- The feelings ___ on a person's face
- 10 Down