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Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 421 · 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 94²? =
  2. 2.What amount will ₹20000 grow to in 2 years at 8% per year compound interest (in ₹)?
  3. 3.Write 2.4 × 10⁻⁴ as a decimal. =
  4. 4.A cuboid is 5 cm long, 9 cm wide and 6 cm high. What is its total surface area (in square cm)?
  5. 5.Which of these is a perfect square? (a) 544 (b) 537 (c) 529
  6. 6.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
  7. 7.Use (a − b)² = a² − 2ab + b² to find 88².
  8. 8.Solve: 3x + 8 = x + 12. What is x?
  9. 9.What is the difference between the compound interest and the simple interest on ₹9200 at 10% per year for 2 years (in ₹)?
  10. 10.Use (a + b)² = a² + 2ab + b² to find 36².
  11. 11.A square garden has an area of 400 square m. How long is each side (in m)?
  12. 12.What is √4624? =
  13. 13.Find the compound interest on ₹50000 at 10% per year for 3 years, compounded every year (in ₹).
  14. 14.The sum of three consecutive whole numbers is 144. What is the smallest of them?
  15. 15.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
  16. 16.A big cube of edge 5 cm is cut into small cubes of edge 1 cm. How many small cubes are there?
  17. 17.A cube has a volume of 64 cubic cm. How long is each edge (in cm)?
  18. 18.What is the sum of the first 28 odd numbers (1 + 3 + 5 + …)?
  19. 19.Solve: y/2 + y/6 = 28. What is y?
  20. 20.How many whole numbers lie between 31² and 32²?
  21. 21.Which of these is a perfect cube? (a) 71 (b) 88 (c) 64
  22. 22.What is √2500? =
  23. 23.Solve: x/2 + x/5 = 56. What is x?
  24. 24.How many whole numbers lie between 23² and 24²?
  25. 25.Which of these is a perfect cube? (a) 1173 (b) 1000 (c) 1229
  26. 26.Use (a + b)(a − b) = a² − b² to find 55 × 45.
  27. 27.What amount will ₹25000 grow to in 3 years at 20% per year compound interest (in ₹)?
  28. 28.Use (a − b)² = a² − 2ab + b² to find 65².
  29. 29.Which of these is a perfect cube? (a) 1631 (b) 1331 (c) 1378
  30. 30.A cuboid is 13 cm long, 2 cm wide and 2 cm high. What is its total surface area (in square cm)?
  31. 31.Which of these is a perfect square? (a) 484 (b) 526 (c) 510
  32. 32.Which of these is a perfect square? (a) 400 (b) 421 (c) 411
  33. 33.Find the compound interest on ₹4000 at 5% per year for 2 years, compounded every year (in ₹).
  34. 34.What is 18³? =
  35. 35.What is the value of 3² × 3⁻²? =
  36. 36.A cube has a volume of 4913 cubic cm. How long is each edge (in cm)?
  37. 37.A cuboid is 14 cm long, 11 cm wide and 5 cm high. What is its total surface area (in square cm)?
  38. 38.Use (a + b)(a − b) = a² − b² to find 93 × 87.
  39. 39.Use (a − b)² = a² − 2ab + b² to find 52².
  40. 40.The total surface area of a cube is 54 square cm. How long is each edge (in cm)?

Answer key

  1. 8836
  2. 23328
  3. 0.00024
  4. 258
  5. 529
  6. 4
  7. 7744
  8. 2
  9. 92
  10. 1296
  11. 20
  12. 68
  13. 16550
  14. 47
  15. 28
  16. 125
  17. 4
  18. 784
  19. 42
  20. 62
  21. 64
  22. 50
  23. 80
  24. 46
  25. 1000
  26. 2475
  27. 43200
  28. 4225
  29. 1331
  30. 112
  31. 484
  32. 400
  33. 410
  34. 5832
  35. 1
  36. 17
  37. 558
  38. 8091
  39. 2704
  40. 3

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