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Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 381 · 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 the value of 2⁵ × 2⁻⁵? =
  2. 2.What is the smallest whole number by which 875 must be multiplied to get a perfect cube?
  3. 3.A cuboid is 3 cm long, 8 cm wide and 4 cm high. What is its total surface area (in square cm)?
  4. 4.A room is 10 m long, 10 m wide and 4 m high. What is the area of its four walls (in square m)?
  5. 5.What amount will ₹59200 grow to in 3 years at 25% per year compound interest (in ₹)?
  6. 6.A big cube of edge 9 cm is cut into small cubes of edge 3 cm. How many small cubes are there?
  7. 7.What is the smallest whole number by which 117 must be multiplied to get a perfect square?
  8. 8.Use (a + b)² = a² + 2ab + b² to find 83².
  9. 9.What is ∛1000? =
  10. 10.Solve: n/3 + n/2 = 15. What is n?
  11. 11.Use (a − b)² = a² − 2ab + b² to find 33².
  12. 12.How many whole numbers lie between 11² and 12²?
  13. 13.Which of these is a perfect cube? (a) 112 (b) 107 (c) 64
  14. 14.Write 2.9 × 10⁻¹ as a decimal. =
  15. 15.A cube has a volume of 4913 cubic cm. How long is each edge (in cm)?
  16. 16.What is the smallest whole number by which 160 must be multiplied to get a perfect square?
  17. 17.Use (a + b)(a − b) = a² − b² to find 36 × 24.
  18. 18.What is the difference between the compound interest and the simple interest on ₹17200 at 25% per year for 2 years (in ₹)?
  19. 19.Use (a − b)² = a² − 2ab + b² to find 97².
  20. 20.Write 16,00,000 in standard form as 1.6 × 10ⁿ. What is n?
  21. 21.Write 9.1 × 10⁻¹ as a decimal. =
  22. 22.What is √2809? =
  23. 23.What is the difference between the compound interest and the simple interest on ₹36100 at 10% per year for 2 years (in ₹)?
  24. 24.Find the value of x² − y² when x = 4 and y = 3.
  25. 25.The length of a rectangle is 2 cm more than its width. Its perimeter is 80 cm. What is its width (in cm)?
  26. 26.How many whole numbers lie between 50² and 51²?
  27. 27.A big cube of edge 2 cm is cut into small cubes of edge 1 cm. How many small cubes are there?
  28. 28.What is the value of 2⁵? =
  29. 29.A square garden has an area of 169 square m. How long is each side (in m)?
  30. 30.If a − b = 2 and ab = 80, what is a² + b²?
  31. 31.Write 5 × 10⁻¹ as a decimal. =
  32. 32.Find the compound interest on ₹57500 at 25% per year for 1 year, compounded every year (in ₹).
  33. 33.What is 3³? =
  34. 34.What is the difference between the compound interest and the simple interest on ₹22900 at 20% per year for 2 years (in ₹)?
  35. 35.What is the difference between the compound interest and the simple interest on ₹50400 at 25% per year for 2 years (in ₹)?
  36. 36.Which of these is a perfect cube? (a) 229 (b) 244 (c) 216
  37. 37.What is the value of 3¹⁰? =
  38. 38.A trapezium has parallel sides of 25 cm and 16 cm, and the distance between them is 4 cm. What is its area (in square cm)?
  39. 39.What is 87²? =
  40. 40.What is ∛10648? =

Answer key

  1. 1
  2. 49
  3. 136
  4. 160
  5. 115625
  6. 27
  7. 13
  8. 6889
  9. 10
  10. 18
  11. 1089
  12. 22
  13. 64
  14. 0.29
  15. 17
  16. 10
  17. 864
  18. 1075
  19. 9409
  20. 6
  21. 0.91
  22. 53
  23. 361
  24. 7
  25. 19
  26. 100
  27. 8
  28. 32
  29. 13
  30. 164
  31. 0.5
  32. 14375
  33. 27
  34. 916
  35. 3150
  36. 216
  37. 59049
  38. 82
  39. 7569
  40. 22

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