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Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 282 · 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 sum of the first 16 odd numbers (1 + 3 + 5 + …)?
  2. 2.What is 65²? =
  3. 3.A big cube of edge 20 cm is cut into small cubes of edge 4 cm. How many small cubes are there?
  4. 4.A cube has a volume of 2197 cubic cm. How long is each edge (in cm)?
  5. 5.A father is 17 years older than his son. In 8 years, the father will be twice as old as his son. How old is the son now?
  6. 6.What amount will ₹41300 grow to in 1 year at 12% per year compound interest (in ₹)?
  7. 7.Solve: x/5 + x/3 = 24. What is x?
  8. 8.What is the smallest whole number by which 3125 must be multiplied to get a perfect cube?
  9. 9.Find the compound interest on ₹3600 at 10% per year for 2 years, compounded every year (in ₹).
  10. 10.A trapezium has an area of 306 square cm. Its parallel sides are 30 cm and 6 cm. What is the distance between them (in cm)?
  11. 11.Write 23,000 in standard form as 2.3 × 10ⁿ. What is n?
  12. 12.Solve: 5(n − 2) = 4n + 2. What is n?
  13. 13.What is 6³? =
  14. 14.What is the value of 3¹ × 3⁻²? =
  15. 15.What is the smallest whole number by which 675 must be divided to get a perfect cube?
  16. 16.What is the difference between the compound interest and the simple interest on ₹54400 at 20% per year for 2 years (in ₹)?
  17. 17.Find the value of x² + 2xy + y² when x = 14 and y = 11.
  18. 18.How many whole numbers lie between 19² and 20²?
  19. 19.What amount will ₹50900 grow to in 2 years at 10% per year compound interest (in ₹)?
  20. 20.Use (a + b)(a − b) = a² − b² to find 89 × 71.
  21. 21.9.2 × 10⁴ =
  22. 22.What is √5041? =
  23. 23.Which of these is a perfect square? (a) 1600 (b) 1618 (c) 1617
  24. 24.Find the compound interest on ₹9900 at 25% per year for 1 year, compounded every year (in ₹).
  25. 25.A trapezium has an area of 50 square cm. Its parallel sides are 10 cm and 15 cm. What is the distance between them (in cm)?
  26. 26.Find the compound interest on ₹16300 at 12% per year for 1 year, compounded every year (in ₹).
  27. 27.What is 7³? =
  28. 28.Solve: 3p + 14 = p + 42. What is p?
  29. 29.What is the value of 3⁻⁵ (as a fraction)? =
  30. 30.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
  31. 31.What is the value of 10⁵ × 10⁻⁴? =
  32. 32.How many whole numbers lie between 25² and 26²?
  33. 33.A square garden has an area of 144 square m. How long is each side (in m)?
  34. 34.A room is 5 m long, 6 m wide and 3 m high. What is the area of its four walls (in square m)?
  35. 35.Solve: p/3 + p/5 = 40. What is p?
  36. 36.What amount will ₹28800 grow to in 1 year at 5% per year compound interest (in ₹)?
  37. 37.A cuboid is 13 cm long, 6 cm wide and 4 cm high. What is its total surface area (in square cm)?
  38. 38.What is the smallest whole number by which 3136 must be multiplied to get a perfect cube?
  39. 39.A father is 9 years older than his son. In 7 years, the father will be twice as old as his son. How old is the son now?
  40. 40.Write 3.8 × 10⁻² as a decimal. =

Answer key

  1. 256
  2. 4225
  3. 125
  4. 13
  5. 9
  6. 46256
  7. 45
  8. 5
  9. 756
  10. 17
  11. 4
  12. 12
  13. 216
  14. 1/3
  15. 25
  16. 2176
  17. 625
  18. 38
  19. 61589
  20. 6319
  21. 92000
  22. 71
  23. 1600
  24. 2475
  25. 4
  26. 1956
  27. 343
  28. 14
  29. 1/243
  30. 24334
  31. 10
  32. 50
  33. 12
  34. 66
  35. 75
  36. 30240
  37. 308
  38. 7
  39. 2
  40. 0.038

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