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Number Crossword #1

Difficulty: * * *   (explanation of difficulty)

Instructions: Fill in each white-coloured box in the grid with a single numeral between 0 and 9, corresponding with the digits in each answer. No number begins with the digit 0. When finished, select the "Check solution" button to check your solution.

When a letter is entered into a square: Do nothing Move cursor right Move cursor down

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Across

  1. 13 + 53 + 33.
  2. The smallest number that can be written as a sum of cubes in two different ways.
  3. A fifth power.
  4. A square number.
  5. 2 down + 4 down − 8 down.
  6. A square number.

Down

  1. The seventh prime number.
  2. The thousands digit minus the hundreds digit equals the tens digit in this multiple of ten.
  3. 22 × 18.
  4. Four digits in ascending order.
  5. One more than the number of degrees in a circle.
  6. A multiple of 21.