Sir Cumference and All the King's Tens

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Across
  1. 2. Written down in the way most commonly accepted
  2. 3. The last or right digit
  3. 6. Writing a number to show the value of each digit.
  4. 7. The value of where the digit is in the number.
Down
  1. 1. The place three to the left of the decimal point in a number
  2. 4. What was Sir Cumference trying to count?
  3. 5. The place two to the left of the decimal point in a number