Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 611 · 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.How many whole numbers lie between 38² and 39²?
2. 2.A cube has a volume of 27 cubic cm. How long is each edge (in cm)?
3. 3.Write 9.4 × 10⁻⁴ as a decimal. =
4. 4.What is the value of 9⁵? =
5. 5.What is 18²? =
6. 6.Solve: 4n + 6 = n + 18. What is n?
7. 7.Solve: m/3 + m/6 = 15. What is m?
8. 8.Find the compound interest on ₹27100 at 20% per year for 2 years, compounded every year (in ₹).
9. 9.Write 3.6 × 10⁻³ as a decimal. =
10. 10.What is the smallest whole number by which 2 must be multiplied to get a perfect cube?
11. 11.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
12. 12.Which of these is a perfect square? (a) 710 (b) 687 (c) 676
13. 13.A town has 49600 people. The population grows by 5% every year. What will the population be after 2 years?
14. 14.What is the smallest whole number by which 576 must be divided to get a perfect cube?
15. 15.What is 63²? =
16. 16.What is the sum of the first 18 odd numbers (1 + 3 + 5 + …)?
17. 17.Write 1.1 × 10⁻¹ as a decimal. =
18. 18.What is √6084? =
19. 19.Solve: t/4 + t/6 = 20. What is t?
20. 20.The total surface area of a cube is 1014 square cm. How long is each edge (in cm)?
21. 21.How many whole numbers lie between 15² and 16²?
22. 22.The length of a rectangle is 13 cm more than its width. Its perimeter is 146 cm. What is its width (in cm)?
23. 23.Which of these is a perfect square? (a) 196 (b) 209 (c) 224
24. 24.What is the smallest whole number by which 12 must be multiplied to get a perfect square?
25. 25.A room is 3 m long, 5 m wide and 3 m high. What is the area of its four walls (in square m)?
26. 26.What is the value of 4⁶? =
27. 27.The length of a rectangle is 13 cm more than its width. Its perimeter is 58 cm. What is its width (in cm)?
28. 28.Each edge of a cube is 3 cm. What is its total surface area (in square cm)?
29. 29.Write 9⁸ × 9⁷ as a single power 9ⁿ. What is n?
30. 30.What is 38²? =
31. 31.The total surface area of a cube is 2400 square cm. How long is each edge (in cm)?
32. 32.What is the sum of the first 29 odd numbers (1 + 3 + 5 + …)?
33. 33.Write 2.9 × 10⁻¹ as a decimal. =
34. 34.Use (a + b)(a − b) = a² − b² to find 91 × 89.
35. 35.What amount will ₹49600 grow to in 1 year at 25% per year compound interest (in ₹)?
36. 36.Use (a + b)² = a² + 2ab + b² to find 81².
37. 37.What is the value of (1/5)⁻¹? =
38. 38.Write 2 × 10⁻¹ as a decimal. =
39. 39.What is √3249? =
40. 40.What is the smallest whole number by which 4 must be multiplied to get a perfect cube?

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