Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 450 · 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.A cuboid is 6 cm long, 5 cm wide and 5 cm high. What is its total surface area (in square cm)?
2. 2.What is 79²? =
3. 3.What amount will ₹13000 grow to in 2 years at 20% per year compound interest (in ₹)?
4. 4.Use (a + b)² = a² + 2ab + b² to find 82².
5. 5.What is the difference between the compound interest and the simple interest on ₹25600 at 25% per year for 2 years (in ₹)?
6. 6.What is 15³? =
7. 7.What is the value of 7⁵? =
8. 8.What is the smallest whole number by which 1080 must be divided to get a perfect cube?
9. 9.Write 3.5 × 10⁻¹ as a decimal. =
10. 10.What is √784? =
11. 11.Write 6.1 × 10⁻¹ as a decimal. =
12. 12.The sum of three consecutive whole numbers is 60. What is the smallest of them?
13. 13.Find the compound interest on ₹47200 at 20% per year for 1 year, compounded every year (in ₹).
14. 14.A cube has a volume of 5832 cubic cm. How long is each edge (in cm)?
15. 15.Find the compound interest on ₹4900 at 25% per year for 1 year, compounded every year (in ₹).
16. 16.A big cube of edge 6 cm is cut into small cubes of edge 3 cm. How many small cubes are there?
17. 17.What amount will ₹12400 grow to in 2 years at 5% per year compound interest (in ₹)?
18. 18.Write 6.1 × 10⁻⁴ as a decimal. =
19. 19.Solve: 3y + 11 = y + 27. What is y?
20. 20.Write 3¹⁴ ÷ 3⁸ as a single power 3ⁿ. What is n?
21. 21.What is the value of 9⁴? =
22. 22.Use (a + b)² = a² + 2ab + b² to find 97².
23. 23.Use a² − b² = (a + b)(a − b) to find 89² − 49².
24. 24.What is the value of 4⁻¹ (as a fraction)? =
25. 25.The diagonals of a rhombus are 6 cm and 6 cm. What is its area (in square cm)?
26. 26.A cube has a volume of 64 cubic cm. How long is each edge (in cm)?
27. 27.Solve: 6(m − 4) = m + 26. What is m?
28. 28.What is the sum of the first 8 odd numbers (1 + 3 + 5 + …)?
29. 29.Solve: 4y + 2 = 3y + 5. What is y?
30. 30.What is the smallest whole number by which 243 must be multiplied to get a perfect square?
31. 31.A trapezium has parallel sides of 7 cm and 15 cm, and the distance between them is 4 cm. What is its area (in square cm)?
32. 32.Use (a + b)(a − b) = a² − b² to find 91 × 89.
33. 33.Write 9.4 × 10⁻¹ as a decimal. =
34. 34.A trapezium has an area of 82 square cm. Its parallel sides are 25 cm and 16 cm. What is the distance between them (in cm)?
35. 35.What amount will ₹60000 grow to in 2 years at 8% per year compound interest (in ₹)?
36. 36.What is the value of 10¹ × 10⁻³? =
37. 37.Solve: 3(m − 2) = m + 2. What is m?
38. 38.Use (a + b)(a − b) = a² − b² to find 31 × 29.
39. 39.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
40. 40.What is 3³? =

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