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Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 345 · 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.The length of a rectangle is 10 cm more than its width. Its perimeter is 28 cm. What is its width (in cm)?
  2. 2.What is the sum of the first 26 odd numbers (1 + 3 + 5 + …)?
  3. 3.A square garden has an area of 49 square m. How long is each side (in m)?
  4. 4.What is ∛27? =
  5. 5.A room is 11 m long, 4 m wide and 3 m high. What is the area of its four walls (in square m)?
  6. 6.A cuboid is 11 cm long, 4 cm wide and 6 cm high. What is its total surface area (in square cm)?
  7. 7.Write 1.3 × 10⁻³ as a decimal. =
  8. 8.What is the smallest whole number by which 5400 must be multiplied to get a perfect cube?
  9. 9.What is the value of 10⁴? =
  10. 10.Each edge of a cube is 3 cm. What is its total surface area (in square cm)?
  11. 11.A square garden has an area of 3481 square m. How long is each side (in m)?
  12. 12.Which of these is a perfect square? (a) 1079 (b) 1040 (c) 1024
  13. 13.Solve: 4p + 4 = p + 49. What is p?
  14. 14.The sum of four consecutive whole numbers is 50. What is the smallest of them?
  15. 15.What is the smallest whole number by which 1512 must be multiplied to get a perfect cube?
  16. 16.What is 45²? =
  17. 17.The total surface area of a cube is 294 square cm. How long is each edge (in cm)?
  18. 18.Which of these is a perfect cube? (a) 3758 (b) 3375 (c) 3905
  19. 19.Use (a + b)(a − b) = a² − b² to find 26 × 14.
  20. 20.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
  21. 21.What amount will ₹57300 grow to in 2 years at 10% per year compound interest (in ₹)?
  22. 22.How many whole numbers lie between 13² and 14²?
  23. 23.What is the value of 2²? =
  24. 24.Write 4.8 × 10⁻⁴ as a decimal. =
  25. 25.The length of a rectangle is 15 cm more than its width. Its perimeter is 114 cm. What is its width (in cm)?
  26. 26.Solve: 8n + 17 = 4n + 45. What is n?
  27. 27.The diagonals of a rhombus are 16 cm and 21 cm. What is its area (in square cm)?
  28. 28.What amount will ₹10900 grow to in 1 year at 25% per year compound interest (in ₹)?
  29. 29.What is 94²? =
  30. 30.How many whole numbers lie between 28² and 29²?
  31. 31.What is the value of (1/2)⁻¹? =
  32. 32.What is 65²? =
  33. 33.Write 8,60,000 in standard form as 8.6 × 10ⁿ. What is n?
  34. 34.A father is 39 years older than his son. In 2 years, the father will be four times as old as his son. How old is the son now?
  35. 35.The total surface area of a cube is 384 square cm. How long is each edge (in cm)?
  36. 36.What is 42²? =
  37. 37.What is the smallest whole number by which 576 must be divided to get a perfect cube?
  38. 38.The total surface area of a cube is 216 square cm. How long is each edge (in cm)?
  39. 39.What is the smallest whole number by which 384 must be divided to get a perfect square?
  40. 40.What is the smallest whole number by which 200 must be divided to get a perfect cube?

Answer key

  1. 2
  2. 676
  3. 7
  4. 3
  5. 90
  6. 268
  7. 0.0013
  8. 5
  9. 10000
  10. 54
  11. 59
  12. 1024
  13. 15
  14. 11
  15. 49
  16. 2025
  17. 7
  18. 3375
  19. 364
  20. 12167
  21. 69333
  22. 26
  23. 4
  24. 0.00048
  25. 21
  26. 7
  27. 168
  28. 13625
  29. 8836
  30. 56
  31. 2
  32. 4225
  33. 5
  34. 11
  35. 8
  36. 1764
  37. 9
  38. 6
  39. 6
  40. 25

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