maths

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Across
  1. 3. Find the HCF of 580 and 620.
  2. 4. Calculate [(22 x 7) / 7] x 12.
  3. 6. A regular polygon has 20 sides, and find the size of each exterior angle.
  4. 7. Find the sum of 18 + 9 x 2 - 5
  5. 9. hcf of 988 and 152
  6. 10. The average weather in Surabaya is 23°. Suddenly, it went up to 34°. Find how much the temperature rose.
  7. 11. Find the sum of the interior angles of a regular polygon with 20 sides.
  8. 12. Isosceles triangle ABC with a base of 40mm and BC = BA = 7cm. What is the sum of angle BAC?
  9. 13. Given that a= 32 ÷ 8 and b= 100 ÷ 5, evaluate 3(b) - ( - a)
  10. 14. let x be 70. What is (x-68) x (x + 283)?
  11. 15. express 964789 to 4 significant figures.
  12. 18. hcf of 2050, 300, 8250
  13. 20. Correct 3250100 to 5 SF
  14. 22. A regular polygon shaped cake has an angle sum of 5400°, find the amount of sides it has
  15. 23. calculate x²/5, let x be the HCF of 45 and 60.
Down
  1. 1. Angle o is vertically opposite to angle c. if angle c= x + 50, and angle o= 3x+10, what is the measure of angle c?
  2. 2. if 2x = 65536 find the value of x.
  3. 3. The radius of a circle is x - 12. Find the diameter if x= 50 + (-12 x 2)
  4. 4. A hexagon has 10 interior angles. Find the sum of the interior angles.
  5. 5. Calculate (x / 28) - 94. Let x be the LCM of 59 and 78.
  6. 6. lcm of 300 and 563
  7. 8. Lcm of 138 and 78?
  8. 10. Obtuse triangle ABC with AC= 5 cm, AB= 90 mm, and BC= 0.06 metres. Find the measure of angle B.
  9. 11. Expand and simplify {25+[(45 ÷ 5)3 + 16]} x ½
  10. 13. Triangle XYZ with YZ = 86mm, YX = 120mm and angle XYZ = 33°. What is the sum of line ZX?
  11. 16. The sum of each interior angle in an equilateral triangle.
  12. 17. Expand and simplify 3(212 / 72) + 46(242-362)
  13. 19. Triangle ABC has side AB= √14400mm, BC= 42cm, and AC= 10cm. FInd the length of AB in cm.
  14. 21. lcm of 25, 69, and 87
  15. 23. Sydney has $265 in her bank account. She received a large amount of money and spent half of it for her personal needs and then deposited the other half into her bank. If she used $140 for her personal needs, how much money does her bank account have now?