CBSE Class 8 Maths Linear Equations in One Variable Quiz 1

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CBSE › Class 8 › Maths › Linear Equations in One Variable

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1. Of the following, the linear equation in one variable x, is

A \(\frac{4}{x}\) = \(\frac{x}{4}\) B \(\frac{1}{x}\) + \(\frac{1}{x-1}\) = 1 C \(\frac{x}{2}\) + \(\frac{x}{3}\) + \(\frac{1}{4}\) D x² + 2x + 3 = 0.

2. The degree of the equation x² - 2x + 1 = x² - 3 is

A 1 B 2 C 0 D 3.

3. The statement ‘on adding 10 in a number, the number becomes 20’ in the form of an equation is

A x - 10 = 20 B x + 10 = 20 C 10x = 20 D \(\frac{x}{10}\) = 20.

4. If 9 is added to a number, it becomes 2 This statement in the form of an equation is

A x + 9 = 25 B x - 9 = 25 C 9x = 25 D \(\frac{x}{9}\) = 25.

5. If 15 is subtracted from a number, it becomes -5. This statement in the form of an equation is

A x + 15 = -5 B x - 15 = 5 C x + 15 = 5 D x - 15 = -5.

6. Seven times a number is 42. This statement in the form of an equation is

A x + 7 = 42 B 7x = 42 C \(\frac{x}{7}\) = 42 D x - 7 = 42.

7. A number when divided by 5 gives 6. This statement in the form of an equation is

A x - 5 = 6 B x + 5 = 6 C \(\frac{x}{5}\) = 6 D 5x = 6.

8. A number when subtracted from 40 results into 15. This statement in the form of an equation is

A 40 - x = 15 B x - 40 = 15 C 40 + x = 15 D 40x = 15.

9. If 6 is added to 3 times of a number, it becomes 15. This statement in the form of an equation is

A 3x + 6 = 15 B 3x - 6 = 15 C 3x + 15 = 6 D \(\frac{3x}{6}\) = 15.

10. On subtracting 30 from two times a number, we get 56. This statement in the form of an equation is

A 2x - 30 = 56 B 2x + 30 = 56 C 30 - 2x = 56 D \(\frac{30}{2x}\) = 56.

Practice more on Linear Equations in One Variable

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