Power of 10/Order of operations

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Across
  1. 3. what each digit represents
  2. 7. fifth step in order of operation
  3. 8. final step in order of operation
  4. 10. a combination of numbers and operations
  5. 12. what form is: 10x10x10x10
  6. 13. separating groups
Down
  1. 1. what does PEMDAS stand for
  2. 2. what is the 2 in 10^2
  3. 4. repeated addition
  4. 5. What is the first step: 8+4-(2x3)
  5. 6. What form is: ten hundred thousandths
  6. 9. 10 is _______ than one tenth
  7. 10. what form is: 10^4
  8. 11. than a hundredth is ______ than 1