Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 805 · 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.What is the smallest whole number by which 250 must be multiplied to get a perfect cube?
2. 2.Write 2.7 × 10⁻² as a decimal. =
3. 3.What is the value of 7⁵? =
4. 4.What is the smallest whole number by which 832 must be multiplied to get a perfect square?
5. 5.A square garden has an area of 1936 square m. How long is each side (in m)?
6. 6.What is √441? =
7. 7.What is the value of 10² × 10⁻²? =
8. 8.The diagonals of a rhombus are 4 cm and 12 cm. What is its area (in square cm)?
9. 9.6.5 × 10³ =
10. 10.Solve: 5(y − 3) = y + 13. What is y?
11. 11.A scooter is worth ₹27600. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
12. 12.Write 7⁹ ÷ 7⁷ as a single power 7ⁿ. What is n?
13. 13.What is 76²? =
14. 14.The diagonals of a rhombus are 16 cm and 21 cm. What is its area (in square cm)?
15. 15.The total surface area of a cube is 600 square cm. How long is each edge (in cm)?
16. 16.What is √9409? =
17. 17.What is the value of 5⁷? =
18. 18.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
19. 19.What is the smallest whole number by which 63 must be divided to get a perfect square?
20. 20.Write 7.1 × 10⁻³ as a decimal. =
21. 21.Solve: 5(n − 1) = 3n + 23. What is n?
22. 22.Solve: 7t + 18 = 4t + 60. What is t?
23. 23.What is the value of 10⁵? =
24. 24.What is 21²? =
25. 25.What is the smallest whole number by which 80 must be divided to get a perfect square?
26. 26.A scooter is worth ₹15400. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
27. 27.2.5 × 10² =
28. 28.Solve: 5(m − 2) = 3m + 6. What is m?
29. 29.If a − b = 5 and ab = 14, what is a² + b²?
30. 30.Write 3,500 in standard form as 3.5 × 10ⁿ. What is n?
31. 31.What is 14³? =
32. 32.The total surface area of a cube is 150 square cm. How long is each edge (in cm)?
33. 33.What is 95²? =
34. 34.What is the sum of the first 15 odd numbers (1 + 3 + 5 + …)?
35. 35.Use (a − b)² = a² − 2ab + b² to find 19².
36. 36.Each edge of a cube is 14 cm. What is its total surface area (in square cm)?
37. 37.Use (a + b)² = a² + 2ab + b² to find 33².
38. 38.What is 14²? =
39. 39.The sum of four consecutive whole numbers is 46. What is the largest of them?
40. 40.Which of these is a perfect square? (a) 225 (b) 240 (c) 253

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