Maths crossword puzzle PT

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Across
  1. 2. Find the value of (13a^2 + 5a) ×400 when a = 3
  2. 7. Simplify (-7)^11 ÷ (-7)^4
  3. 9. (2x + 3)(x - 1) - x(x + 2) = 0
  4. 11. Round the number into 1 decimal place 5784.98653
  5. 13. 4√4100625 + [5(3√250047 - 36)]
  6. 14. The next even number after √841
  7. 16. Fill in the blanks 5204237198, __________, 5404237198, 5504237198
  8. 20. In a figure, D is a point on CB such that AD = 2 cm, AC = 4.5 cm, CD = 3.5 cm and ∠ABD = 50°. Find the length of BD.
  9. 22. Solve this equation (4x - 3)^2 + (4x + 3)^2 = 25
  10. 23. A, B and C are three points on level ground. Given that the bearing of B from A is 122°, ∠CAB = 32° and ∠ABC = 86°, find the possible bearing(s) of C from B.
  11. 24. Simplify 3x + 18x^2 - 4x + 2x^2 + 56 - 47
  12. 25. Find the value of 12abc / 3√a+b+c when a = 2, b = 14, c = 11
  13. 26. A helicopter flies 30 km from a point P to another point Q on a bearing of 128°. It then flies another 25 km to a point R on a bearing of 295°. Find the distance between P and R.
  14. 27. 9^5
Down
  1. 1. LCM of 48, 64 and 128
  2. 3. Simplify (5x - 150) (2x - 2)
  3. 4. 10^9
  4. 5. LCM of 75 and 125
  5. 6. ABCDEFGH is a regular heptagon. If AB and DC are produced to meet at H, find the value of ∠BHC.
  6. 8. Simplify (c^6)^5 ÷ (-c^2)
  7. 10. Ethan has a bank balance of $435, He deposits $15 and then withdraws $150. What is his new balance?
  8. 12. Round the number into 3 significant figures 5379.076
  9. 15. {2[3(4^2+6^3-√6084)]÷4}
  10. 16. In a rectangle ABCD, E is the midpoint of AB and ∠CED = 118°. Find ∠ADE.
  11. 17. The next odd number after 3√46656
  12. 18. HCF of 4096 and 8192
  13. 19. HCF of 64 and 128
  14. 21. The points A, B, C and D are consecutive vertices of a regular polygon with 20 sides. Find ∠ABC.
  15. 23. On a map whose scale is 2 cm to 5 km, a farm is shown as a triangle XYZ. Given that XY = 9 cm, YZ = 12 cm and XZ = 8 cm, find the area in km^2, which is represented by triangle XYZ.
  16. 28. In a trapezium ABCD, AB // DC, AB = AD, ∠BCD = 52° and ∠ADC = 62°. Find ∠CBD.