Across
- 2. a mathematical operation that reverses or "undoes" the effect of another operation. Just like a "do" and "undo" button, applying an inverse operation to a number or equation brings you right back to your starting value.
- 8. you are multiplying a number by a group of added numbers, you can "distribute" or "share" that outside number with everyone inside the group.
- 9. how numbers are grouped (with parentheses) doesn't change the final answer when adding or multiplying.
- 11. number with a fixed value that never changes.
- 12. The properties of algebra enable us to solve mathematical equations. Notice that these properties hold for addition and multiplication.
- 13. can perform an operation on a number that leaves its "identity" completely unchanged.
- 15. Expression- a math phrase that mixes numbers, letters, and operation signs (+, -, ×, ÷) but does not have an equals sign.
- 16. a math sentence that uses an equal sign (=) to show that two sides are equal or worth the same amount.
- 18. single number, a variable, or numbers and letters multiplied together that make up part of an expression or equation.
- 19. a special way of showing a part of a whole, where the whole is always cut into 100 equal pieces.
Down
- 1. a math phrase made up of numbers and action symbols (like plus, minus, times, or divide), but it never has an equal sign.
- 3. number sentence that compares two amounts to show they are not equal, meaning one value is bigger or smaller than the other. Instead of an equals sign (=) which shows two things are the exact same, an inequality uses special comparison symbols.
- 4. a number that divides evenly into another number with zero remainder. You can also think of factors as the numbers you multiply together to get a specific product.
- 5. how much of something gets made or done in a specific amount of time.
- 6. Changing the order of the numbers doesn't change the answer.
- 7. is an algebraic equation that contains only one unknown letter (or variable) and has a degree of 1. This means the variable is never raised to a power.
- 10. is a letter (like x or y) that stands for a number we do not know yet.
- 14. In mathematics, an expression is a combination of numbers, variables, and operation symbols (like +, -, x, ÷ that represents a specific value or quantity.
- 17. is a numerical or constant factor that is multiplied by a variable in an algebraic term. It essentially tells you how many of that variable you have.