← Class 8 final maths test lesson New set →

Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 802 · 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 diagonals of a rhombus are 18 cm and 3 cm. What is its area (in square cm)?
  2. 2.A cuboid is 3 cm long, 9 cm wide and 3 cm high. What is its total surface area (in square cm)?
  3. 3.Find the value of x² + 2xy + y² when x = 5 and y = 1.
  4. 4.The length of a rectangle is 9 cm more than its width. Its perimeter is 78 cm. What is its width (in cm)?
  5. 5.What is the difference between the compound interest and the simple interest on ₹48000 at 20% per year for 2 years (in ₹)?
  6. 6.Which of these is a perfect square? (a) 134 (b) 125 (c) 121
  7. 7.If a + b = 7 and ab = 12, what is a² + b²?
  8. 8.Solve: 4(x − 2) = 3x + 2. What is x?
  9. 9.Solve: 5(y − 1) = 4y + 1. What is y?
  10. 10.What is 5³? =
  11. 11.The sum of two consecutive whole numbers is 85. What is the largest of them?
  12. 12.Use (a + b)² = a² + 2ab + b² to find 105².
  13. 13.Which of these is a perfect square? (a) 1600 (b) 1655 (c) 1645
  14. 14.A cube has a volume of 8000 cubic cm. How long is each edge (in cm)?
  15. 15.Solve: 4t + 13 = t + 49. What is t?
  16. 16.The diagonals of a rhombus are 4 cm and 3 cm. What is its area (in square cm)?
  17. 17.Each edge of a cube is 17 cm. What is its total surface area (in square cm)?
  18. 18.A big cube of edge 4 cm is cut into small cubes of edge 1 cm. How many small cubes are there?
  19. 19.Write 260 in standard form as 2.6 × 10ⁿ. What is n?
  20. 20.A trapezium has an area of 261 square cm. Its parallel sides are 26 cm and 3 cm. What is the distance between them (in cm)?
  21. 21.Use a² − b² = (a + b)(a − b) to find 44² − 12².
  22. 22.Find the value of x² − y² when x = 6 and y = 2.
  23. 23.A big cube of edge 2 cm is cut into small cubes of edge 1 cm. How many small cubes are there?
  24. 24.The total surface area of a cube is 1536 square cm. How long is each edge (in cm)?
  25. 25.A trapezium has parallel sides of 13 cm and 4 cm, and the distance between them is 2 cm. What is its area (in square cm)?
  26. 26.A cuboid is 13 cm long, 3 cm wide and 9 cm high. What is its total surface area (in square cm)?
  27. 27.The length of a rectangle is 3 cm more than its width. Its perimeter is 122 cm. What is its width (in cm)?
  28. 28.Find the value of x² − 2xy + y² when x = 14 and y = 2.
  29. 29.8.9 × 10² =
  30. 30.What amount will ₹22500 grow to in 2 years at 8% per year compound interest (in ₹)?
  31. 31.Write 17,00,000 in standard form as 1.7 × 10ⁿ. What is n?
  32. 32.What is the value of 3⁴? =
  33. 33.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
  34. 34.Find the value of x² − 2xy + y² when x = 15 and y = 3.
  35. 35.What is √6889? =
  36. 36.Solve: 8m + 12 = 3m + 42. What is m?
  37. 37.Use (a + b)² = a² + 2ab + b² to find 89².
  38. 38.A cuboid is 13 cm long, 11 cm wide and 10 cm high. What is its total surface area (in square cm)?
  39. 39.A scooter is worth ₹22400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
  40. 40.Use (a − b)² = a² − 2ab + b² to find 47².

Answer key

  1. 27
  2. 126
  3. 36
  4. 15
  5. 1920
  6. 121
  7. 25
  8. 10
  9. 6
  10. 125
  11. 43
  12. 11025
  13. 1600
  14. 20
  15. 12
  16. 6
  17. 1734
  18. 64
  19. 2
  20. 18
  21. 1792
  22. 32
  23. 8
  24. 16
  25. 17
  26. 366
  27. 29
  28. 144
  29. 890
  30. 26244
  31. 6
  32. 81
  33. 48668
  34. 144
  35. 83
  36. 6
  37. 7921
  38. 766
  39. 16184
  40. 2209

Free maths worksheets lessons, practice and worksheets at talentjr.in/maths-worksheets