Math Words

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Across
  1. 1. joining groups of things together
  2. 3. saying how many things there are
  3. 4. 20
  4. 5. 7
  5. 8. 2,4,6,8...
Down
  1. 2. 13
  2. 6. =
  3. 7. 1,3,5,7...