Vocabulary one

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Across
  1. 1. In math to replace a number with an approximate value to make the number shorter or simpler
  2. 4. To appear by coming out of something or out from behind something
Down
  1. 1. Able to be trusted.
  2. 2. value The value of a digit based on its position in a number
  3. 3. To cause something to grow or change.