Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 739 · 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 × 10⁻⁴ as a decimal. =
2. 2.What is 3³? =
3. 3.What is the value of 6⁻³ (as a fraction)? =
4. 4.The diagonals of a rhombus are 22 cm and 16 cm. What is its area (in square cm)?
5. 5.What is ∛5832? =
6. 6.What is ∛4096? =
7. 7.A town has 57200 people. The population grows by 8% every year. What will the population be after 1 year?
8. 8.Write 4.1 × 10⁻² as a decimal. =
9. 9.A cube has a volume of 2197 cubic cm. How long is each edge (in cm)?
10. 10.What is the sum of the first 15 odd numbers (1 + 3 + 5 + …)?
11. 11.Find the compound interest on ₹45800 at 15% per year for 1 year, compounded every year (in ₹).
12. 12.Write 2.2 × 10⁻¹ as a decimal. =
13. 13.Which of these is a perfect square? (a) 676 (b) 689 (c) 692
14. 14.What is the value of 10³? =
15. 15.Use (a + b)² = a² + 2ab + b² to find 98².
16. 16.Which of these is a perfect square? (a) 1424 (b) 1369 (c) 1434
17. 17.A father is 30 years older than his son. In 5 years, the father will be four times as old as his son. How old is the son now?
18. 18.A cuboid is 6 cm long, 12 cm wide and 8 cm high. What is its total surface area (in square cm)?
19. 19.If a − b = 3 and ab = 70, what is a² + b²?
20. 20.Use (a − b)² = a² − 2ab + b² to find 33².
21. 21.What is the smallest whole number by which 54 must be divided to get a perfect square?
22. 22.What is 4³? =
23. 23.If a + b = 3 and ab = 2, what is a² + b²?
24. 24.Write 4.8 × 10⁻³ as a decimal. =
25. 25.A big cube of edge 6 cm is cut into small cubes of edge 3 cm. How many small cubes are there?
26. 26.A scooter is worth ₹48000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
27. 27.Each edge of a cube is 17 cm. What is its total surface area (in square cm)?
28. 28.Write 17,00,000 in standard form as 1.7 × 10ⁿ. What is n?
29. 29.A cuboid is 14 cm long, 12 cm wide and 10 cm high. What is its total surface area (in square cm)?
30. 30.Use (a + b)² = a² + 2ab + b² to find 72².
31. 31.A town has 43600 people. The population grows by 5% every year. What will the population be after 2 years?
32. 32.A square garden has an area of 2916 square m. How long is each side (in m)?
33. 33.What is ∛8000? =
34. 34.What is √6889? =
35. 35.A room is 6 m long, 8 m wide and 5 m high. What is the area of its four walls (in square m)?
36. 36.What is the difference between the compound interest and the simple interest on ₹17300 at 20% per year for 2 years (in ₹)?
37. 37.If a + b = 7 and ab = 10, what is a² + b²?
38. 38.A cube has a volume of 343 cubic cm. How long is each edge (in cm)?
39. 39.Each edge of a cube is 22 cm. What is its total surface area (in square cm)?
40. 40.Solve: 5(n − 5) = 3n + 9. What is n?

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