Math Crossword 2

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Across
  1. 1. Evaluate 4⁵ x ¹²√4096
  2. 3. Simplify 8+[24-(16-10)]
  3. 5. Evaluate 5⁴ x 3⁶.
  4. 8. Find the value of x when x is supplementary to y, x is vertically opposite to an unknown angle, and y is vertically opposite to an angle measuring 115°.
  5. 9. The twin primes between 40 and 50
  6. 11. Simplify 6(8xy ÷ 4x) x 10(6x ÷ 2xy)
  7. 12. Find the value of x inside trapezium PQRS when angle QPS=120°=angle PQR, and angle PSR=2x=angle QRS.
  8. 13. The LCM of 9, 11 and 13
Down
  1. 2. Change 81/18 to a decimal and express your answer to 4 significant figures.
  2. 4. Triangle ABC is an isosceles triangle, angle BAC=x, exterior of angle ACB=248°. Find the value of x.
  3. 5. An astronaut 22,482km above ground flies 18,440km upwards. At what height is he at now?
  4. 6. Find the angle sum of interior angles for a 30 sided polygon.
  5. 7. The ninth odd number after 346
  6. 10. Rewrite (8 + 2x)-(4 + 2x x 8 + 2x) in its simplest form.