Number, Place Value and Real Numbers

12345678910111213141516171819202122232425
Across
  1. 3. The rules for simplifying expressions involving powers of the same base number.
  2. 5. The value of where the digit is in the number, such as units, tens, hundreds, etc.
  3. 7. Any whole number that CAN be divided exactly by 2.
  4. 8. A close guess of the actual value, usually with some thought or calculation involved.
  5. 10. A number that can be written without a fractional or decimal component.
  6. 11. If you can't simplify a number to remove a square root (or cube root etc.) then it is a …
  7. 12. The …. (or ‘exponent’ or ‘power’) of a number says how many times to use the number in a multiplication.
  8. 13. As one amount increases, another amount increases at the same rate. Symbol: ∝
  9. 15. A number that cannot be written as a simple fraction.
  10. 16. The power (or ‘exponent’ or ‘index’) of a number says how many times to use the number in a multiplication.
  11. 17. To split into equal parts or groups.
  12. 19. A value that can be multiplied by itself to give the original. A…. ….. of x is (√x).
  13. 23. A number that can make a triangular dot pattern.
  14. 25. Any whole number that CANNOT be divided exactly by 2.
Down
  1. 1. Any number, except 0, raised to the power zero has a numerical value of 1.
  2. 2. Adding a number to itself a certain number of times
  3. 4. A way of writing numbers that are too big or too small to be conveniently written in decimal form.
  4. 6. A whole number that can be divided evenly by numbers other than 1 or itself.
  5. 9. The power to which another fixed value (the base) must be raised to produce that number.
  6. 13. Multiplying a number by a group of numbers added together is the same as doing each multiplication separately.
  7. 14. If there is something left over when dividing it is called the...
  8. 18. Numbers you can multiply to get another number
  9. 20. A number that can be written as a simple fraction (i.e. as a ratio).
  10. 21. Reducing the digits in a number while trying to keep its value similar. The result is less accurate, but easier to use.
  11. 22. The answer to a multiplication problem.
  12. 24. A …. says how much of one thing there is compared to another thing.