Y6 maths challenge

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Across
  1. 3. 7 Across minus 4 Down.
  2. 4. A quarter of 3948.
  3. 7. A three-digit number in the 88 times table. Its last digit is 6.
  4. 8. A three-digit number in the 19 times table. Its middle digit is 9.
  5. 9. 4994 minus 19 Down.
  6. 10. A multiple of 4 Down.
  7. 12. Find the Lowest Common Multiple of 63 and 49."
  8. 13. 4 + 10 x12^2
  9. 14. Start with 2. Multiply it by 11, then multiply that answer by itself. What do you get?
  10. 16. 43 plus the square root of 16.
  11. 17. A rectangular field is 88 m long. It is half as wide as it is long. What is its area in square metres?
  12. 19. The mean of 2 Down and 1 Across
  13. 20. 88x77
Down
  1. 1. A palindromic number whose digits have a sum of 33
  2. 2. (a x 2+1) / 5 = 103 What is a?
  3. 5. Write two numbers that come one after the other (like 12 and 13) side by side to make a five-digit number. Its digits add up to 26, and it can be divided exactly by 4. What is the number?
  4. 6. I am thinking of a number n. Four lots of n plus 6 gives the same answer as three lots of n plus 892. What is n?
  5. 7. Share 198 into 3 equal parts, then take 2 of those parts. What number do you have?
  6. 8. The square root of 324, multiplied by 10 + 1
  7. 9. The square root of 169 multiplied by 29 minus 276.
  8. 10. The largest two-digit factor of 2 Down.
  9. 11. The product of 17 and 12.
  10. 12. b=(4 x 13 x 17)/2
  11. 13. work out 2^7dog Man's best friend
  12. 15. Work out 2 x 15^2 - 9 (Remember 15^2 means 15x15)
  13. 17. A factor of 5 Across.
  14. 18. The sum of three consecutive odd numbers is 813. Find the smallest of the three numbers
  15. 19. A number pattern starts 2, 5, 11, 23, 47, 95. To get the next number, double the one before it and take away 1. What is the 8th number in the pattern?