Math Crossword Puzzle

4. two numbers whose product is 1
7. taking a phrase or word problem and changing it to an expression or equation
8. the total amount resulting from subtracting two or more numbers
9. a number's distance from zero
10. numbers that follow each other in an order
14. two expressions with an equal sign between them
16. a symbol to represent an unknown amount
17. an expression (no equal sign) that contains a variable
19. the total amount resulting from dividing two or more numbers
20. pairs of mathematical manipulations in which one operation under does the action of the other

1. two numbers that are on different sides of the number line but are the same distance form zero
2. two numbers that are written differently, but equal the same value
3. reducing an expression to as few terms as possible
5. replacing variables with values and simplifying them
6. a pair of parentheses, brackets, or a fraction bar used to group part of an expression that should be simplified first
11. all possible solutions to an equation over a given domain
12. a set of numbers you plug in to the variable
13. the total amount resulting from adding two or more numbers
15. the answer you get after evaluating an equation
18. the total amount resulting from multiplying two or more numbers