Maths - you may use a calculator

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Across
  1. 2. the combined product of the McKeowns ages on the 9th September
  2. 5. The number of Dalmatians minus a bakers dozen
  3. 6. The sum of the year Sam and Matthew were born
  4. 7. The current year times Emily's age
  5. 10. The product of the year Emily and Anna were born
  6. 11. The next leap year
Down
  1. 1. The new flat code
  2. 3. The amount of secounds in a leap year
  3. 4. The amount Sue's cousins times by the amount of Sibling John had
  4. 5. The house numbers of our house, your house and the flat
  5. 8. The amount of Ml in a Litre divided by the position of Boron on the periodic table
  6. 9. Grandmas age times by 500