Math Crossword #1

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Across
  1. 1. What is 5 to the power of 4?
  2. 4. Simplify 4 * x + (2 - 7).
  3. 5. Simplify 3(5x + 7).
  4. 7. What is the square root of 1600?
  5. 8. Express a loss of 10kg in directed numbers.
  6. 10. Simplify 17 * (28 / 2(4 -2)).
  7. 11. Round 237364 to 4 significant figures.
  8. 13. Let x be 2, find x(5+8-3).
  9. 14. Simplify x * 3 + 7.
  10. 15. What is the HCF of 120 and 40?
Down
  1. 2. Write in mathematical symbols the difference of 5 multiplied by x and 10.
  2. 3. Let x be 5 and y be 7, find x(y-4x).
  3. 5. What is the LCM of 150 and 30?
  4. 6. How many prime numbers are there before 30?
  5. 7. Simplify 7xy + 2x - 3xy.
  6. 9. Simplify 53 + 16(18 - 15).
  7. 10. Round 12784 to 2 significant figures.
  8. 12. Write in mathematical symbols the sum of x multiplied by 7 and the difference between 10 and y
  9. 13. Express a height of 263m.