Maths magic

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Across
  1. 1. 3+3=?
  2. 2. 8×5=?
  3. 4. 6+2=?
  4. 6. 10-5=?
  5. 8. The shape of coin
Down
  1. 1. A shaped with 4 equal sides
  2. 2. The number that comes after four
  3. 3. A number before ten
  4. 5. A shape with three sides.
  5. 7. The number of fingers on one hand