Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 247 · 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 difference between the compound interest and the simple interest on ₹27900 at 20% per year for 2 years (in ₹)?
2. 2.What is the value of 2⁹? =
3. 3.Write 3.3 × 10⁻⁴ as a decimal. =
4. 4.Use (a − b)² = a² − 2ab + b² to find 19².
5. 5.What is 8³? =
6. 6.A cuboid is 10 cm long, 5 cm wide and 8 cm high. What is its total surface area (in square cm)?
7. 7.A cube has a volume of 3375 cubic cm. How long is each edge (in cm)?
8. 8.Solve: m/4 + m/3 = 28. What is m?
9. 9.What is ∛10648? =
10. 10.What is ∛64? =
11. 11.What is 11³? =
12. 12.Write 7,00,000 in standard form as 7 × 10ⁿ. What is n?
13. 13.What is ∛729? =
14. 14.A cuboid is 15 cm long, 12 cm wide and 2 cm high. What is its total surface area (in square cm)?
15. 15.What is the value of (5/8)⁻¹? =
16. 16.A trapezium has an area of 138 square cm. Its parallel sides are 16 cm and 7 cm. What is the distance between them (in cm)?
17. 17.What is the value of 5² × 5⁻³? =
18. 18.Solve: 5(x − 4) = 3x + 2. What is x?
19. 19.If a + b = 3 and ab = 2, what is a² + b²?
20. 20.What is the smallest whole number by which 90 must be multiplied to get a perfect square?
21. 21.What is 5³? =
22. 22.The total surface area of a cube is 384 square cm. How long is each edge (in cm)?
23. 23.2.9 × 10² =
24. 24.Solve: 3(x − 1) = 2x + 8. What is x?
25. 25.What is the value of 3⁻⁶ (as a fraction)? =
26. 26.Write 9.2 × 10⁻³ as a decimal. =
27. 27.Use (a + b)(a − b) = a² − b² to find 61 × 59.
28. 28.What is the value of 6⁻¹ (as a fraction)? =
29. 29.A father is 33 years older than his son. In 3 years, the father will be four times as old as his son. How old is the son now?
30. 30.Solve: x/2 + x/5 = 42. What is x?
31. 31.Use (a + b)² = a² + 2ab + b² to find 93².
32. 32.What is the value of (1/7)⁻¹? =
33. 33.A father is 21 years older than his son. In 1 year, the father will be four times as old as his son. How old is the son now?
34. 34.The length of a rectangle is 14 cm more than its width. Its perimeter is 84 cm. What is its width (in cm)?
35. 35.Use (a + b)(a − b) = a² − b² to find 39 × 21.
36. 36.The total surface area of a cube is 1944 square cm. How long is each edge (in cm)?
37. 37.Use (a + b)² = a² + 2ab + b² to find 99².
38. 38.A cuboid is 8 cm long, 8 cm wide and 9 cm high. What is its total surface area (in square cm)?
39. 39.A town has 2800 people. The population grows by 5% every year. What will the population be after 2 years?
40. 40.A trapezium has an area of 108 square cm. Its parallel sides are 12 cm and 6 cm. What is the distance between them (in cm)?

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