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Class 8 Math: Linear Equations in One Variable
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MCQs on solving equations with variables and numbers, linear equation applications, equation reduction and finding the variable value, linear equation reductions and age or money denomination currency word problems.
 

Class 8 Math: Linear Equations in One Variable
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25 Questions

1. Arya takes a number adds \(\frac{13}{3}\) to it and then divides it by 3. At the end of all operations he gets 12. What would be the original number?
2. The digits of a two-digit number differ by 4. If the digits are interchanged, and the resulting number is added to the original number, we get 152. What can be the original number?
3. Solve: 11x – 2 = 7x + 12.
4. If a side of a regular hexagon is 20 cm then what will be the perimeter of that regular hexagon?
5. The sum of two natural numbers is 5, the numbers are in a ratio 2:3. Find the numbers.
6. At present Disha’s mother is three times the age of Disha. After 5 years their ages will sum up to 70 years. Find the present age.
7. Sum of two distinct numbers is positive then which of the following statements is correct?
8. Jon is thrice as old as Kavya. Five years ago his age was two times Kavya’s age. Find their present age.
9. Solve: \(\frac{x}{5} + \frac{x}{7} = \frac{1}{35}\).
10. Bansal has 7 times as many two-rupee coins as he has five-rupee coins. If he has in all a sum of rupees 95, how many coins of each denomination does he have?
11. What should be added to twice the rational number \(\frac{13}{3}\) to get \(\frac{13}{6}\)?
12. If the perimeter of square is 28 m. Find the length of the side.
13. In equation 3x + 4 = 10, by transposing the variable on RHS we get ________
14. Sum of consecutive multiples of 23 is 1656. Find the multiples.
15. Simplify: t – 12 = 12t – 1.
16. Form an equation for all multiples of 12.
17. If circumference of a circle is 6.28 cm then what is the radius of the circle?
18. Solve equation 7x + 14 = 21 to find value of x.
19. The notebook costs thirty rupees. How many ten rupees notes will be required to pay the whole amount?
20. If Akshat has twelve two rupees coins and two five rupees coins. What is the total amount with him?
21. When the equation \(\frac{12x}{2} + \frac{6x}{5}\) = 0 is simplified the solution of the equation would be?
22. Find the solution for the equation 3x + 3 = 4.
23. What is the solution of the equation, 7 + 2x = 0?
24. Solve: \(\frac{2x-11}{2} + \frac{x}{7}\) = 5.
25. If Raj scores 27 marks less than the highest scorer and the highest scorer has 2 marks less than the maximum achievable score, then find the score that Raj scored, if the maximum achievable score is 100.

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