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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. In equation 3x + 4 = 10, by transposing the variable on RHS we get ________
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. Form an equation for all multiples of 12.
4. If a side of a regular hexagon is 20 cm then what will be the perimeter of that regular hexagon?
5. Solve: 7x – 2 = 3.
6. Solve: 12x-13=2x*(11-12).
7. The sum of three consecutive numbers is 789, what are those consecutive numbers?
8. 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?
9. The notebook costs thirty rupees. How many ten rupees notes will be required to pay the whole amount?
10. There are two parties in an election the ratio of their votes is 2:3. The total number of voters who took part in that election are 1200. How many votes did the winning party get?
11. Solve: 13x-2=21x+2.
12. Solve: \(\frac{x}{5} + \frac{x}{7} = \frac{1}{35}\).
13. Simplify: \(\frac{13x-1}{12}\)=12.
14. Sum of consecutive multiples of 23 is 1656. Find the multiples.
15. Find the solution for the equation 3x + 3 = 4.
16. Solve equation 7x + 14 = 21 to find value of x.
17. At Tanay’s birth, he was 34 years younger than his father. What will be his age after 20 years?
18. Simplify: \(\frac{2x+1}{2} + \frac{2x-1}{3}\) = 1.
19. Solve: \(\frac{3x+7}{12} + \frac{22x-1}{3}\) = 1.
20. If Malik has 3 coins and his sister has 4 coins each of 2 rupees, what will be the sum of amount both have?
21. If circumference of a circle is 6.28 cm then what is the radius of the circle?
22. If a girl buys an ice cream worth twenty seven rupees and pays the shopkeeper with a note worth fifty rupees. What will be the change she received from the shopkeeper?
23. Sara is twice the age of Marry. The sum total of Sara’s age and Marry’s age after five years is 52. What is Marry’s present age?
24. Simplify: t – 12 = 12t – 1.
25. If the perimeter of a scalene triangle is 23 cm, with side 1 with Length 12 cm and side 2 with Length 3 cm. Find the Length of third side.

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