Linear Equations in One Variable Practice Questions

Class 8 · Mathematics · 756 free MCQs with instant results and detailed explanations.

756

Total

286

Easy

351

Medium

119

Hard

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Topics in Linear Equations in One Variable

Reducing Equations 299

Applications 235

Solving Equations 222

Sample Questions from Linear Equations in One Variable

Here are 10 sample questions. Start a quiz to get randomized questions with scoring.

Easy

Solve the equation x/4 + 2 = 5. What is x?

A. 6

B. 12

C. 16

D. 8

Show Answer & Explanation

Correct Answer: B

Subtract 2, multiply by 4 to find x.

Easy

The equation 5x + 3 = 23 can be solved for x. What is x?

A. 4

B. 5

C. 2

D. 3

Show Answer & Explanation

Correct Answer: A

Isolate x by first subtracting 3 then dividing by 5.

Easy

What is the solution of the equation 7 - 2x = 1?

A. 3

B. 2

C. 1

D. 4

Show Answer & Explanation

Correct Answer: B

Subtract 7, then divide by -2 to isolate x.

Medium

What is the solution to the equation 5x - 3 = 2?

A. 1

B. 0

C. 3

D. -1

Show Answer & Explanation

Correct Answer: A

To solve for x, add 3 to both sides to get 5x = 5, then divide by 5.

Medium

If 2(x + 4) = 12, what is the value of x?

A. 2

B. 4

C. 0

D. 6

Show Answer & Explanation

Correct Answer: A

First divide both sides by 2, then subtract 4 from both sides to isolate x.

Medium

Solve the equation 3(x - 1) + 4 = 10. What is x?

A. 2

B. 5

C. 3

D. 1

Show Answer & Explanation

Correct Answer: A

Distribute and simplify the equation to find the value of x.

Medium

What does the solution of the equation 4x + 5 = 29 represent?

A. A point on a graph

B. The y-intercept

C. A slope

D. An angle

Show Answer & Explanation

Correct Answer: A

The solution indicates a specific value of x corresponding to y in the equation, hence a point on a graph.

Hard

A number is increased by 15 and then multiplied by 3 gives 60. What is the number?

A. 5

B. 10

C. 15

D. 20

Show Answer & Explanation

Correct Answer: B

Let the number be x. The equation can be set as 3(x + 15) = 60. Solving for x gives us 10.

Hard

A rectangle’s length is twice its width. If the perimeter is 48 cm, what is the width?

A. 8 cm

B. 10 cm

C. 12 cm

D. 14 cm

Show Answer & Explanation

Correct Answer: A

Let width be w, then length is 2w. Perimeter formula: 2(l + w) = 48 leads to 2(2w + w) = 48, solving gives w = 8 cm.

Q10

Hard

A number decreased by 9 equals 2 times the number increased by 3. What is the number?

A. 6

B. 7

C. 8

D. 9

Show Answer & Explanation

Correct Answer: C

Set the equation as x - 9 = 2(x + 3). Solving gives x = 8.

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Linear Equations in One Variable — Class 8 Mathematics Practice Questions Online

This page contains 756 practice MCQs for the chapter Linear Equations in One Variable in Class 8 Mathematics. The questions are organized by difficulty — 286 easy, 351 medium, 119 hard — so you can choose the right level for your preparation.

Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 3 topics, giving you comprehensive coverage of the entire chapter.