Class 8 Maths Final Test Worksheet

Maths worksheets lesson 64: Class 8 final maths test · Set 583 · 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.A cuboid is 4 cm long, 4 cm wide and 8 cm high. What is its total surface area (in square cm)?
2. 2.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
3. 3.Use (a + b)(a − b) = a² − b² to find 48 × 32.
4. 4.Write 1.9 × 10⁻³ as a decimal. =
5. 5.What amount will ₹16900 grow to in 1 year at 4% per year compound interest (in ₹)?
6. 6.A scooter is worth ₹27800. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
7. 7.A father is 13 years older than his son. In 1 year, the father will be twice as old as his son. How old is the son now?
8. 8.The sum of three consecutive whole numbers is 177. What is the smallest of them?
9. 9.A trapezium has parallel sides of 30 cm and 9 cm, and the distance between them is 4 cm. What is its area (in square cm)?
10. 10.A cube has a volume of 3375 cubic cm. How long is each edge (in cm)?
11. 11.Which of these is a perfect cube? (a) 1502 (b) 1385 (c) 1331
12. 12.9.6 × 10³ =
13. 13.The sum of two consecutive whole numbers is 37. What is the largest of them?
14. 14.What is the difference between the compound interest and the simple interest on ₹58000 at 25% per year for 2 years (in ₹)?
15. 15.5 × 10² =
16. 16.A trapezium has parallel sides of 27 cm and 24 cm, and the distance between them is 8 cm. What is its area (in square cm)?
17. 17.Solve: t/3 + t/4 = 7. What is t?
18. 18.Solve: 3(x − 1) = 2x + 13. What is x?
19. 19.What is the smallest whole number by which 56 must be divided to get a perfect cube?
20. 20.7.6 × 10⁴ =
21. 21.What is the value of 3⁶ × 3⁻²? =
22. 22.Write 5.1 × 10⁻³ as a decimal. =
23. 23.A trapezium has an area of 78 square cm. Its parallel sides are 6 cm and 20 cm. What is the distance between them (in cm)?
24. 24.A room is 10 m long, 10 m wide and 4 m high. What is the area of its four walls (in square m)?
25. 25.What is 5³? =
26. 26.The length of a rectangle is 13 cm more than its width. Its perimeter is 34 cm. What is its width (in cm)?
27. 27.A cube has a volume of 2744 cubic cm. How long is each edge (in cm)?
28. 28.What is the difference between the compound interest and the simple interest on ₹14400 at 5% per year for 2 years (in ₹)?
29. 29.Use a² − b² = (a + b)(a − b) to find 27² − 15².
30. 30.What is the value of 2⁴ × 2⁻⁵? =
31. 31.A cube has a volume of 6859 cubic cm. How long is each edge (in cm)?
32. 32.A cuboid is 5 cm long, 8 cm wide and 4 cm high. What is its total surface area (in square cm)?
33. 33.What is √2209? =
34. 34.A cube has a volume of 343 cubic cm. How long is each edge (in cm)?
35. 35.A trapezium has parallel sides of 26 cm and 5 cm, and the distance between them is 4 cm. What is its area (in square cm)?
36. 36.How many whole numbers lie between 25² and 26²?
37. 37.Use (a − b)² = a² − 2ab + b² to find 69².
38. 38.A trapezium has an area of 147 square cm. Its parallel sides are 13 cm and 29 cm. What is the distance between them (in cm)?
39. 39.What is the smallest whole number by which 125 must be multiplied to get a perfect square?
40. 40.A square garden has an area of 1369 square m. How long is each side (in m)?

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