Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 110 · 40 sums

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.

1. 1.Write 9.1 × 10⁻³ as a decimal. =
2. 2.What is the sum of the first 16 odd numbers (1 + 3 + 5 + …)?
3. 3.What is the sum of the first 8 odd numbers (1 + 3 + 5 + …)?
4. 4.Find the compound interest on ₹59200 at 25% per year for 3 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹35000 at 4% per year for 2 years, compounded every year (in ₹).
6. 6.The length of a rectangle is 9 cm more than its width. Its perimeter is 50 cm. What is its width (in cm)?
7. 7.A father is 7 years older than his son. In 5 years, the father will be twice as old as his son. How old is the son now?
8. 8.What amount will ₹5000 grow to in 2 years at 8% per year compound interest (in ₹)?
9. 9.Solve: x/4 + x/3 = 14. What is x?
10. 10.The length of a rectangle is 13 cm more than its width. Its perimeter is 46 cm. What is its width (in cm)?
11. 11.A cube has a volume of 512 cubic cm. How long is each edge (in cm)?
12. 12.A cuboid is 15 cm long, 6 cm wide and 10 cm high. What is its total surface area (in square cm)?
13. 13.What is √8100? =
14. 14.The total surface area of a cube is 384 square cm. How long is each edge (in cm)?
15. 15.What is the value of 2⁴ × 2⁻¹? =
16. 16.A room is 7 m long, 10 m wide and 3 m high. What is the area of its four walls (in square m)?
17. 17.The sum of two consecutive whole numbers is 15. What is the largest of them?
18. 18.What is the value of 3⁹? =
19. 19.The total surface area of a cube is 2400 square cm. How long is each edge (in cm)?
20. 20.The total surface area of a cube is 1734 square cm. How long is each edge (in cm)?
21. 21.Solve: 3y + 15 = 2y + 18. What is y?
22. 22.Use (a − b)² = a² − 2ab + b² to find 25².
23. 23.What is the smallest whole number by which 40 must be multiplied to get a perfect square?
24. 24.A trapezium has parallel sides of 20 cm and 5 cm, and the distance between them is 4 cm. What is its area (in square cm)?
25. 25.What is the smallest whole number by which 128 must be multiplied to get a perfect cube?
26. 26.The diagonals of a rhombus are 4 cm and 7 cm. What is its area (in square cm)?
27. 27.What is ∛15625? =
28. 28.How many whole numbers lie between 33² and 34²?
29. 29.What is the sum of the first 26 odd numbers (1 + 3 + 5 + …)?
30. 30.A big cube of edge 12 cm is cut into small cubes of edge 4 cm. How many small cubes are there?
31. 31.What amount will ₹33600 grow to in 3 years at 25% per year compound interest (in ₹)?
32. 32.Each edge of a cube is 20 cm. What is its total surface area (in square cm)?
33. 33.What is 20²? =
34. 34.A scooter is worth ₹14000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
35. 35.A cube has a volume of 6859 cubic cm. How long is each edge (in cm)?
36. 36.What amount will ₹5100 grow to in 1 year at 5% per year compound interest (in ₹)?
37. 37.What is √729? =
38. 38.A town has 58000 people. The population grows by 25% every year. What will the population be after 2 years?
39. 39.Solve: p/3 + p/4 = 14. What is p?
40. 40.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?

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