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Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 248 · 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.How many whole numbers lie between 20² and 21²?
  2. 2.A father is 7 years older than his son. In 3 years, the father will be twice as old as his son. How old is the son now?
  3. 3.A square garden has an area of 1521 square m. How long is each side (in m)?
  4. 4.A room is 7 m long, 7 m wide and 4 m high. What is the area of its four walls (in square m)?
  5. 5.What is the sum of the first 25 odd numbers (1 + 3 + 5 + …)?
  6. 6.Which of these is a perfect cube? (a) 27 (b) 44 (c) 34
  7. 7.A square garden has an area of 2809 square m. How long is each side (in m)?
  8. 8.What is ∛12167? =
  9. 9.Each edge of a cube is 17 cm. What is its total surface area (in square cm)?
  10. 10.Write (8⁶)⁴ as a single power 8ⁿ. What is n?
  11. 11.What is 4³? =
  12. 12.What is the smallest whole number by which 3125 must be multiplied to get a perfect cube?
  13. 13.What is the difference between the compound interest and the simple interest on ₹8400 at 15% per year for 2 years (in ₹)?
  14. 14.7.4 × 10⁵ =
  15. 15.Write 8.8 × 10⁻² as a decimal. =
  16. 16.What is the value of 9⁻² (as a fraction)? =
  17. 17.A father is 13 years older than his son. In 7 years, the father will be twice as old as his son. How old is the son now?
  18. 18.What is √6400? =
  19. 19.If a + b = 15 and ab = 44, what is a² + b²?
  20. 20.A square garden has an area of 400 square m. How long is each side (in m)?
  21. 21.Use (a + b)² = a² + 2ab + b² to find 39².
  22. 22.A scooter is worth ₹44000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
  23. 23.Solve: 3y + 5 = y + 19. What is y?
  24. 24.Use (a + b)² = a² + 2ab + b² to find 47².
  25. 25.Write 4¹² ÷ 4⁶ as a single power 4ⁿ. What is n?
  26. 26.What is the value of 9⁴? =
  27. 27.Each edge of a cube is 12 cm. What is its total surface area (in square cm)?
  28. 28.A town has 5000 people. The population grows by 20% every year. What will the population be after 3 years?
  29. 29.Use a² − b² = (a + b)(a − b) to find 72² − 8².
  30. 30.What is the value of 2⁻⁶ (as a fraction)? =
  31. 31.A big cube of edge 16 cm is cut into small cubes of edge 4 cm. How many small cubes are there?
  32. 32.Which of these is a perfect square? (a) 1664 (b) 1667 (c) 1600
  33. 33.Solve: 4t + 14 = t + 29. What is t?
  34. 34.The length of a rectangle is 6 cm more than its width. Its perimeter is 80 cm. What is its width (in cm)?
  35. 35.The sum of two consecutive whole numbers is 11. What is the largest of them?
  36. 36.Write 4¹³ ÷ 4⁵ as a single power 4ⁿ. What is n?
  37. 37.Write 4.7 × 10⁻⁴ as a decimal. =
  38. 38.A room is 4 m long, 10 m wide and 3 m high. What is the area of its four walls (in square m)?
  39. 39.What is ∛343? =
  40. 40.What is the value of 2⁻⁴ (as a fraction)? =

Answer key

  1. 40
  2. 4
  3. 39
  4. 112
  5. 625
  6. 27
  7. 53
  8. 23
  9. 1734
  10. 24
  11. 64
  12. 5
  13. 189
  14. 740000
  15. 0.088
  16. 1/81
  17. 6
  18. 80
  19. 137
  20. 20
  21. 1521
  22. 39710
  23. 7
  24. 2209
  25. 6
  26. 6561
  27. 864
  28. 8640
  29. 5120
  30. 1/64
  31. 64
  32. 1600
  33. 5
  34. 17
  35. 6
  36. 8
  37. 0.00047
  38. 84
  39. 7
  40. 1/16

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