Rahul bought a book for ₹200 and sold it for ₹240. He calculated his profit percentage as (₹40 / ₹240) × 100%. Which of the following statements correctly identifies Rahul's mistake?

The calculation should be (₹40 / ₹200) × 100%.

Chapter 7 (Samacheer Kalvi) · Class 8 TN Board · Free Worksheet PDF

Life Mathematics (வாழ்வியல் கணிதம்) Sums for Class 8 — Free TN Board Worksheet PDF with Answers

Q: Where can I download free life mathematics (வாழ்வியல் கணிதம்) sums for Class 8?

You can download a free Life Mathematics (வாழ்வியல் கணிதம்) PDF worksheet for Class 8 TN Board right here on SparkEd. The worksheet includes 30 practice questions (life mathematics (வாழ்வியல் கணிதம்) concepts, practice problems, and word problems with step-by-step solutions) at easy, medium, and hard levels with a complete answer key.

Q: How many life mathematics (வாழ்வியல் கணிதம்) questions are in this Class 8 worksheet?

This SparkEd worksheet for Life Mathematics (வாழ்வியல் கணிதம்) Class 8 contains 30 questions — 10 easy, 10 medium, and 10 hard. The questions cover life mathematics (வாழ்வியல் கணிதம்) concepts, practice problems, and word problems with step-by-step solutions. A fresh set is generated daily so students never repeat the same sheet.

Q: Does the Life Mathematics (வாழ்வியல் கணிதம்) worksheet for Class 8 include answers?

Yes! Every SparkEd worksheet comes with a complete answer key. Students can self-check their work after completing the sheet. The PDF is free to download and print.

Q: Is this life mathematics (வாழ்வியல் கணிதம்) worksheet aligned to TN Board syllabus?

Yes. This worksheet is specifically designed for Class 8 TN Board students and aligned to the 2025-26 TN Board syllabus. All questions follow the TN Board exam pattern and difficulty level.

Q: Can I print this Life Mathematics (வாழ்வியல் கணிதம்) worksheet?

Absolutely! The worksheet downloads as an A4-size PDF that is ready to print. It includes the questions, space for working, and a separate answer key — perfect for classroom use or home practice.

Q: How is this worksheet different from NCERT textbook exercises?

SparkEd worksheets go beyond NCERT exercises by providing 30 questions at 3 progressive difficulty levels. Level 1 (Easy) builds confidence, Level 2 (Medium) tests application, and Level 3 (Hard) prepares for exams. Each worksheet includes word problems and conceptual questions, not just computation.

Q: Does this worksheet include life mathematics (வாழ்வியல் கணிதம்) word problems?

Yes! The worksheet includes both computation-based questions and real-world word problems. Word problems are especially important for TN Board exams, and our worksheet covers a variety of scenarios to build problem-solving skills.

Download a free printable life mathematics (வாழ்வியல் கணிதம்) worksheet for Class 8 TN Board with 30 practice questions covering life mathematics (வாழ்வியல் கணிதம்) concepts, practice problems, and word problems with step-by-step solutions. Includes complete answer key. TN Board-aligned for the 2025-26 syllabus.

Last updated: 5 May 2026

Download Full PDF Worksheet

30 questions (Easy + Medium + Hard) with answer key. Fresh set generated daily.

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Sample Life Mathematics (வாழ்வியல் கணிதம்) Sums for Class 8 — Practice Questions

Here are 8 sample life mathematics (வாழ்வியல் கணிதம்) sums from this Class 8 TN Board worksheet. Download the full PDF for all 30 questions with answers.

Q1.

A shopkeeper first increases the price of an item by 20% and then decreases the new price by 20%. Which of the following statements is true about the final price compared to the original price?

The final price is the same as the original price.

The final price is less than the original price.

The final price is more than the original price.

The final price depends on the original price value.

Difficulty: Easy

Q2.

A vendor sells a bicycle. Which of the following conditions must be true for the vendor to make a profit?

Selling Price (SP) < Cost Price (CP)

Selling Price (SP) = Cost Price (CP)

Selling Price (SP) > Cost Price (CP)

The item is sold quickly.

Difficulty: Easy

Q3.

In a school, 40% of the students are girls. If the total number of girls is 240, what is the total number of students in the school?

500

550

650

600

Difficulty: Easy

Q4.

Rahul bought a book for ₹200 and sold it for ₹240. He calculated his profit percentage as (₹40 / ₹240) \times 100%. Which of the following statements correctly identifies Rahul's mistake?

The profit amount is incorrect.

The selling price should not be used in the denominator.

The calculation should be (₹40 / ₹200) \times 100%.

Both B and C are correct.

Difficulty: Easy

Q5.

A shop offers a discount on an item. Which of the following statements correctly describes the relationship between the Marked Price (MP), Selling Price (SP), and Discount (D)?

SP = MP + D

MP = SP - D

D = MP - SP

D = SP - MP

Difficulty: Easy

Q6.

A washing machine is priced at ₹15,000. If 18% GST is charged on it, which of the following expressions correctly calculates the final amount a customer has to pay?

₹15,000 - (18/100) \times ₹15,000

₹15,000 + (18/100) \times ₹15,000

(18/100) \times ₹15,000

₹15,000 / (1 + 18/100)

Difficulty: Easy

Q7.

Simple Interest (SI) is calculated using the formula SI = (P \times R \times T) / 100. Which of the following statements is TRUE about Simple Interest?

SI depends on the amount accumulated over time.

SI depends on the principal amount, rate of interest, and time period.

SI depends only on the principal and time.

SI depends on the interest being added back to the principal each year.

Difficulty: Easy

Q8.

After a 20% reduction in its price, a TV now costs ₹16,000. What was the original price of the TV?

₹18,000

₹19,200

₹20,000

₹21,000

Difficulty: Easy

Answer Key — Sample Questions+

Q1:The final price is less than the original price.

Q2:Selling Price (SP) > Cost Price (CP)

Q3:600

Q4:Both B and C are correct.

Q5:D = MP - SP

Q6:₹15,000 + (18/100) × ₹15,000

Q7:SI depends on the principal amount, rate of interest, and time period.

Q8:₹20,000

Download the full PDF for all 30 answers with step-by-step solutions.

About This Worksheet

Topic	Life Mathematics (வாழ்வியல் கணிதம்)
Board	TN Board
Class	8
Total Questions	30 (10 Easy + 10 Medium + 10 Hard)
Answer Key	Included
Price	Free

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Frequently Asked Questions

Where can I download free life mathematics (வாழ்வியல் கணிதம்) sums for Class 8?

You can download a free Life Mathematics (வாழ்வியல் கணிதம்) PDF worksheet for Class 8 TN Board right here on SparkEd. The worksheet includes 30 practice questions (life mathematics (வாழ்வியல் கணிதம்) concepts, practice problems, and word problems with step-by-step solutions) at easy, medium, and hard levels with a complete answer key.

How many life mathematics (வாழ்வியல் கணிதம்) questions are in this Class 8 worksheet?

This SparkEd worksheet for Life Mathematics (வாழ்வியல் கணிதம்) Class 8 contains 30 questions — 10 easy, 10 medium, and 10 hard. The questions cover life mathematics (வாழ்வியல் கணிதம்) concepts, practice problems, and word problems with step-by-step solutions. A fresh set is generated daily so students never repeat the same sheet.

Does the Life Mathematics (வாழ்வியல் கணிதம்) worksheet for Class 8 include answers?

Yes! Every SparkEd worksheet comes with a complete answer key. Students can self-check their work after completing the sheet. The PDF is free to download and print.

Is this life mathematics (வாழ்வியல் கணிதம்) worksheet aligned to TN Board syllabus?

Yes. This worksheet is specifically designed for Class 8 TN Board students and aligned to the 2025-26 TN Board syllabus. All questions follow the TN Board exam pattern and difficulty level.

Can I print this Life Mathematics (வாழ்வியல் கணிதம்) worksheet?

Absolutely! The worksheet downloads as an A4-size PDF that is ready to print. It includes the questions, space for working, and a separate answer key — perfect for classroom use or home practice.

How is this worksheet different from NCERT textbook exercises?

SparkEd worksheets go beyond NCERT exercises by providing 30 questions at 3 progressive difficulty levels. Level 1 (Easy) builds confidence, Level 2 (Medium) tests application, and Level 3 (Hard) prepares for exams. Each worksheet includes word problems and conceptual questions, not just computation.

Does this worksheet include life mathematics (வாழ்வியல் கணிதம்) word problems?

Yes! The worksheet includes both computation-based questions and real-world word problems. Word problems are especially important for TN Board exams, and our worksheet covers a variety of scenarios to build problem-solving skills.

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