Cool stuff

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Across
  1. 2. &
  2. 3. 1+2=3
  3. 8. 123× 2= 246
  4. 9. ink
Down
  1. 1. 1+1=2
  2. 4. there's more Kate
  3. 5. lead
  4. 6. glue
  5. 7. Sticky