Across
- 4. A number used to multiply a variable.
- 9. A decimal number with a digit (or group of digits) that repeats forever.
- 10. Multiplying a number by a group of numbers added together is the same as doing each multiplication separately.
- 12. When quantities have the same relative size. In other words they have the same ratio.
- 13. A symbol for a number we don't know yet. It is usually a letter like x or y.
- 15. The Law that says you can swap numbers around and still get the same answer when you add or when you multiply.
- 16. Uses letters (like x or y) or other symbols in place of values, and then plays with them using special rules.
- 17. A pair of numbers whose sum is zero: same as additive inverse.
- 19. How far a number is from zero.
Down
- 1. The constant value (often written k) relating amounts that rise or fall uniformly together.It is the ratio of the amounts y and x: k = y/x
- 2. What you add to a number to get zero. The negative of a number.
- 3. Numbers we can multiply together to get another number.
- 5. A fixed value.
- 6. How steep a line is.
- 7. When adding it doesn't matter how we group the numbers (i.e. which we calculate first).
- 8. A reduction in the normal price
- 11. How much of something per 1 unit of something else
- 12. The relative change between an old value and its new value,expressed as a percentage of the old value:(new value - old value)/old value)
- 14. Terms whose variable (such as x or y) with any exponents (such as 2 in the x^2) are the same.
- 18. A number with no fractional part (no decimals).