Across
- 2. product of prime numbers in 80's
- 3. max number days in 6 years
- 4. square root of 13 squared - 5 squared
- 6. area of this shape - trapezium x (28)
- 7. palindromic square number
- 9. odd number that is 4th power
- 11. mean of .............
- 13. number seconds in 3 hours
- 14. 4x2160.5
- 16. product of first 7 numbers in Fibonacci sequence
Down
- 1. 4x+3 where x is (10)
- 2. (10800)x7
- 5. sum of the first 5 prime numbers
- 6. number multiplied by 4 is this reversed
- 7. sum of internal angles in a dodecagon
- 8. 83% of (121)
- 10. number of degrees in rhombus x (43)
- 12. (2178) divided by 3
- 15. square and cube number
- 17. number of digits in .....