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Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 658 · 40 sums
TalentJR

The method (Read, plan, check): Find the type of question first: power, square or cube, equation, identity, area or interest? Use the method from that lesson, step by step. Check: square or cube your root back, put equation answers back in, and work interest year by year.

NameDateTime takenScore ___ / 40
  1. 1.What is 14³? =
  2. 2.Solve: 9n + 12 = 5n + 24. What is n?
  3. 3.What is the smallest whole number by which 252 must be multiplied to get a perfect square?
  4. 4.What is ∛512? =
  5. 5.Solve: 8p + 16 = 3p + 51. What is p?
  6. 6.Which of these is a perfect square? (a) 1423 (b) 1425 (c) 1369
  7. 7.What is 13³? =
  8. 8.What is the value of 3⁻² (as a fraction)? =
  9. 9.How many whole numbers lie between 22² and 23²?
  10. 10.A square garden has an area of 1444 square m. How long is each side (in m)?
  11. 11.The sum of two consecutive whole numbers is 97. What is the largest of them?
  12. 12.What is 67²? =
  13. 13.What is 98²? =
  14. 14.The sum of two consecutive whole numbers is 21. What is the largest of them?
  15. 15.What is 4³? =
  16. 16.The total surface area of a cube is 864 square cm. How long is each edge (in cm)?
  17. 17.What is ∛27? =
  18. 18.What is the smallest whole number by which 6125 must be divided to get a perfect cube?
  19. 19.What is 3³? =
  20. 20.How many whole numbers lie between 13² and 14²?
  21. 21.Write 4,50,00,000 in standard form as 4.5 × 10ⁿ. What is n?
  22. 22.What is the value of 6⁻² (as a fraction)? =
  23. 23.A big cube of edge 6 cm is cut into small cubes of edge 1 cm. How many small cubes are there?
  24. 24.What is √1024? =
  25. 25.A big cube of edge 18 cm is cut into small cubes of edge 3 cm. How many small cubes are there?
  26. 26.What is the difference between the compound interest and the simple interest on ₹5000 at 10% per year for 2 years (in ₹)?
  27. 27.A cube has a volume of 1000 cubic cm. How long is each edge (in cm)?
  28. 28.The diagonals of a rhombus are 16 cm and 21 cm. What is its area (in square cm)?
  29. 29.What is the smallest whole number by which 20 must be multiplied to get a perfect square?
  30. 30.A room is 5 m long, 8 m wide and 4 m high. What is the area of its four walls (in square m)?
  31. 31.A cuboid is 8 cm long, 4 cm wide and 8 cm high. What is its total surface area (in square cm)?
  32. 32.The sum of three consecutive whole numbers is 153. What is the smallest of them?
  33. 33.Use (a + b)² = a² + 2ab + b² to find 58².
  34. 34.What is ∛5832? =
  35. 35.Write 8.3 × 10⁻¹ as a decimal. =
  36. 36.Find the compound interest on ₹55700 at 4% per year for 1 year, compounded every year (in ₹).
  37. 37.What amount will ₹45600 grow to in 1 year at 20% per year compound interest (in ₹)?
  38. 38.If a + b = 13 and ab = 36, what is a² + b²?
  39. 39.What is the smallest whole number by which 32 must be divided to get a perfect cube?
  40. 40.Use (a + b)² = a² + 2ab + b² to find 87².

Answer key

  1. 2744
  2. 3
  3. 7
  4. 8
  5. 7
  6. 1369
  7. 2197
  8. 1/9
  9. 44
  10. 38
  11. 49
  12. 4489
  13. 9604
  14. 11
  15. 64
  16. 12
  17. 3
  18. 49
  19. 27
  20. 26
  21. 7
  22. 1/36
  23. 216
  24. 32
  25. 216
  26. 50
  27. 10
  28. 168
  29. 5
  30. 104
  31. 256
  32. 50
  33. 3364
  34. 18
  35. 0.83
  36. 2228
  37. 54720
  38. 97
  39. 4
  40. 7569

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