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Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 6 · 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 13 cm more than its width. Its perimeter is 34 cm. What is its width (in cm)?
  2. 2.Write 910 in standard form as 9.1 × 10ⁿ. What is n?
  3. 3.What is the difference between the compound interest and the simple interest on ₹28800 at 15% per year for 2 years (in ₹)?
  4. 4.What is the value of 10¹ × 10⁻³? =
  5. 5.How many whole numbers lie between 22² and 23²?
  6. 6.Find the compound interest on ₹35000 at 4% per year for 2 years, compounded every year (in ₹).
  7. 7.What is the difference between the compound interest and the simple interest on ₹6400 at 25% per year for 2 years (in ₹)?
  8. 8.What is 20³? =
  9. 9.A trapezium has parallel sides of 16 cm and 28 cm, and the distance between them is 7 cm. What is its area (in square cm)?
  10. 10.What is ∛3375? =
  11. 11.How many whole numbers lie between 20² and 21²?
  12. 12.What is the difference between the compound interest and the simple interest on ₹42000 at 5% per year for 2 years (in ₹)?
  13. 13.The total surface area of a cube is 54 square cm. How long is each edge (in cm)?
  14. 14.Write (4⁵)² as a single power 4ⁿ. What is n?
  15. 15.What is the smallest whole number by which 490 must be divided to get a perfect square?
  16. 16.A scooter is worth ₹22500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
  17. 17.Write 7.4 × 10⁻¹ as a decimal. =
  18. 18.Solve: x/3 + x/4 = 21. What is x?
  19. 19.What is ∛27? =
  20. 20.Write 5⁶ × 5⁸ as a single power 5ⁿ. What is n?
  21. 21.Which of these is a perfect cube? (a) 2496 (b) 2197 (c) 2230
  22. 22.What is 29²? =
  23. 23.Which of these is a perfect cube? (a) 3418 (b) 3930 (c) 3375
  24. 24.The sum of four consecutive whole numbers is 206. What is the largest of them?
  25. 25.The sum of two consecutive whole numbers is 47. What is the smallest of them?
  26. 26.What is √8281? =
  27. 27.A square garden has an area of 361 square m. How long is each side (in m)?
  28. 28.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
  29. 29.How many whole numbers lie between 15² and 16²?
  30. 30.What is 2³? =
  31. 31.Write 5⁴ × 5⁹ as a single power 5ⁿ. What is n?
  32. 32.Which of these is a perfect square? (a) 1139 (b) 1089 (c) 1155
  33. 33.What is the sum of the first 18 odd numbers (1 + 3 + 5 + …)?
  34. 34.The length of a rectangle is 14 cm more than its width. Its perimeter is 84 cm. What is its width (in cm)?
  35. 35.What is 11³? =
  36. 36.The length of a rectangle is 5 cm more than its width. Its perimeter is 22 cm. What is its width (in cm)?
  37. 37.What is the smallest whole number by which 567 must be divided to get a perfect square?
  38. 38.What is ∛125? =
  39. 39.Which of these is a perfect cube? (a) 85 (b) 94 (c) 64
  40. 40.What is the value of 2⁻⁹ (as a fraction)? =

Answer key

  1. 2
  2. 2
  3. 648
  4. 1/100
  5. 44
  6. 2856
  7. 400
  8. 8000
  9. 154
  10. 15
  11. 40
  12. 105
  13. 3
  14. 10
  15. 10
  16. 20736
  17. 0.74
  18. 36
  19. 3
  20. 14
  21. 2197
  22. 841
  23. 3375
  24. 53
  25. 23
  26. 91
  27. 19
  28. 8334
  29. 30
  30. 8
  31. 13
  32. 1089
  33. 324
  34. 14
  35. 1331
  36. 3
  37. 7
  38. 5
  39. 64
  40. 1/512

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