1. Find the value of $x$ if $2x + 3 = 11$. 2. Simplify $5(3x - 2) + 4x$. 3. Solve for $y$: $3y - 7 = 2y + 5$. 4. Calculate the area of a rectangle with length 8 cm and width 5 cm. 5. Find the perimeter of a square with side 6 cm. 6. What is the value of $7^2$? 7. Convert 0.75 to a fraction. 8. Find the LCM of 12 and 18. 9. Find the HCF of 24 and 36. 10. If $x = 3$ and $y = 4$, find the value of $2x + 3y$. 11. Simplify: $\frac{3}{4} + \frac{2}{5}$. 12. Find the square root of 81. 13. Calculate the volume of a cube with side 4 cm. 14. Solve for $x$: $4x - 5 = 3x + 2$. 15. Find the mean of the numbers: 5, 10, 15, 20, 25. 16. What is 15% of 200? 17. Find the median of the numbers: 3, 7, 9, 12, 15. 18. Simplify: $6x - 2x + 4$. 19. Find the value of $x$ if $x^2 = 49$. 20. Calculate the circumference of a circle with radius 7 cm (use $\pi = 22/7$). 21. Find the mode of the numbers: 2, 4, 4, 6, 8. 22. Convert 1500 meters to kilometers. 23. Solve for $x$: $\frac{x}{3} = 9$. 24. Find the next number in the sequence: 2, 4, 8, 16, __. 25. Calculate the simple interest on 1000 for 2 years at 5% per annum. 26. Find the value of $3^3$. 27. Simplify: $\frac{5}{8} - \frac{1}{4}$. 28. Find the area of a triangle with base 10 cm and height 6 cm. 29. Solve for $x$: $5x + 2 = 3x + 10$. 30. Find the product of 12 and 15. 31. Calculate the average speed if a car travels 150 km in 3 hours. 32. Find the value of $x$ if $2(x - 3) = 10$. 33. Simplify: $7(2x + 3) - 4x$. 34. Find the perimeter of a triangle with sides 5 cm, 7 cm, and 9 cm. 35. Convert 3 hours into minutes. 36. Find the value of $x$ if $x/5 + 3 = 8$. 37. Calculate the area of a circle with diameter 14 cm (use $\pi = 22/7$). 38. Find the sum of the first 5 natural numbers. 39. Solve for $x$: $x^2 - 16 = 0$. 40. Find the value of $\frac{2}{3} \times \frac{9}{4}$.