Count by 10's

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Across
  1. 2. 10+50
  2. 4. 100-50
  3. 6. 5x2
  4. 7. 10x8
  5. 8. 5x6
  6. 9. 10x10
Down
  1. 1. 70+20
  2. 3. 5+15
  3. 4. 55-15
  4. 5. 45+25