number play

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Across
  1. 2. Order Arranging a sequence of numbers from the smallest value to the largest value.
  2. 4. Sum The total sum obtained by adding all individual digits of a number together.
  3. 5. Constant the constant number 6174 obtained by repeatedly subtracting 4-digit numbers in ascending and descending order.
  4. 7. Conjecture A mathematical process of halving even numbers and tripling odd numbers plus one that always leads to 1.
  5. 9. A cell in a grid containing a number strictly greater than all adjacent neighboring cells.
  6. 10. Numbers Numbers that follow each other in order without gaps.
Down
  1. 1. A number or pattern that reads identical forward and backward.
  2. 3. Finding an approximate value close enough to the actual answer without exact calculation.
  3. 6. A repeating sequence or predictable rule followed by a series of numbers or shapes.
  4. 8. Line A straight line marked with numbers at equal intervals to visually place and compare values.