Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 302 · 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.The sum of four consecutive whole numbers is 66. What is the smallest of them?
2. 2.What is 6³? =
3. 3.The diagonals of a rhombus are 18 cm and 13 cm. What is its area (in square cm)?
4. 4.A cuboid is 14 cm long, 7 cm wide and 10 cm high. What is its total surface area (in square cm)?
5. 5.7.3 × 10² =
6. 6.What is the smallest whole number by which 5 must be divided to get a perfect cube?
7. 7.A cuboid is 13 cm long, 11 cm wide and 4 cm high. What is its total surface area (in square cm)?
8. 8.A cuboid is 14 cm long, 6 cm wide and 9 cm high. What is its total surface area (in square cm)?
9. 9.What is ∛512? =
10. 10.What is 14³? =
11. 11.Use (a + b)(a − b) = a² − b² to find 56 × 44.
12. 12.6 × 10⁵ =
13. 13.Find the compound interest on ₹3200 at 25% per year for 3 years, compounded every year (in ₹).
14. 14.What is ∛5832? =
15. 15.The sum of two consecutive whole numbers is 11. What is the smallest of them?
16. 16.What is the value of 5⁶ × 5⁻²? =
17. 17.What is the value of 5⁻² (as a fraction)? =
18. 18.If a − b = 3 and ab = 28, what is a² + b²?
19. 19.Write 8.6 × 10⁻¹ as a decimal. =
20. 20.A square garden has an area of 361 square m. How long is each side (in m)?
21. 21.What is the value of 9⁻¹ (as a fraction)? =
22. 22.What is the difference between the compound interest and the simple interest on ₹16000 at 15% per year for 2 years (in ₹)?
23. 23.What is the sum of the first 28 odd numbers (1 + 3 + 5 + …)?
24. 24.Which of these is a perfect cube? (a) 2744 (b) 3026 (c) 3176
25. 25.The total surface area of a cube is 294 square cm. How long is each edge (in cm)?
26. 26.What is the smallest whole number by which 1125 must be multiplied to get a perfect cube?
27. 27.Which of these is a perfect square? (a) 676 (b) 709 (c) 688
28. 28.What is √3844? =
29. 29.What is 5³? =
30. 30.What is the smallest whole number by which 18 must be divided to get a perfect square?
31. 31.What is ∛216? =
32. 32.What is the difference between the compound interest and the simple interest on ₹58400 at 5% per year for 2 years (in ₹)?
33. 33.A cuboid is 6 cm long, 3 cm wide and 2 cm high. What is its total surface area (in square cm)?
34. 34.What is the smallest whole number by which 504 must be divided to get a perfect square?
35. 35.What is √4900? =
36. 36.Use a² − b² = (a + b)(a − b) to find 57² − 5².
37. 37.What is the value of 7⁴? =
38. 38.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
39. 39.What is the smallest whole number by which 16 must be multiplied to get a perfect cube?
40. 40.What is 18³? =

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