Simple Interest Class 7 Worksheet — Free PDF Download with Answers

Simple interest is one of the first maths chapters that feels grown up. Suddenly your worksheet is full of rupees, percents per year, and loan periods. Students love it because it feels like they are learning real world money maths. But that sense of relevance is exactly why the chapter needs careful paper practice.

A teacher I spoke with last month said something that stuck with me. She said that children who learn simple interest only on apps end up able to solve the questions they see but completely lost when the question is phrased differently. The formula $I = \dfrac{PRT}{100}$ sits in their head, but when a problem says ‘find the rate if the interest is twice the principal in ten years’, they cannot rearrange the formula on the fly. Paper work trains exactly this kind of flexibility.

Worksheets also teach students to read long problems carefully. Simple interest word problems can have multiple numbers — principal, rate, time, and sometimes amount. Students who practise on paper learn to underline the key numbers, write them in a list, and then apply the formula. This habit saves many marks in exams.

There is also the matter of unit consistency. Rates are per year, time must be in years, and principal in rupees. If a question gives time in months, the student must convert. Paper practice, with its expectation of clear steps, teaches this habit in a way that speedy app clicks never will.

And as with every paper session, there is the relief for young eyes. Twenty minutes away from a screen, focused on a single piece of paper, is good for the body and good for the brain.

The worksheet covers the full Class 7 Simple Interest chapter.

Sub topics:

* Meaning of principal, interest, rate, time and amount
* Simple interest formula
* Calculating interest given P, R, T
* Finding principal given I, R, T
* Finding rate given I, P, T
* Finding time given I, P, R
* Amount after interest
* Word problems involving loans, deposits and investments

Level breakdown:

60 questions with full answer key.

Revise these core concepts first.

* Principal (P) — The original sum of money borrowed or deposited.
* Rate (R) — The interest charged per year, expressed as a percentage.
* Time (T) — The period for which the money is borrowed or deposited, in years.
* Simple interest formula — $I = \dfrac{P \times R \times T}{100}$.
* Amount — $A = P + I$.
* Finding P, R or T — Rearrange the formula. $P = \dfrac{100I}{RT}$, $R = \dfrac{100I}{PT}$, $T = \dfrac{100I}{PR}$.

Quick tip: Always convert time to years before using the formula. If the question gives time in months, divide by $12$. If the question gives time in days, divide by $365$.

Level 1 — Easy

1. Find the simple interest on Rs. 1000 at $5\%$ per year for $2$ years.
Solution: $I = \dfrac{1000 \times 5 \times 2}{100} = 100$ rupees.

2. Find the amount after $3$ years if the simple interest is Rs. 300 and the principal is Rs. 1000.
Solution: $A = 1000 + 300 = 1300$ rupees.

3. A sum of Rs. 500 earns simple interest of Rs. 50 per year. What is the rate?
Solution: $R = \dfrac{100 \times 50}{500 \times 1} = 10\%$ per year.

Level 2 — Medium

1. Find the simple interest on Rs. 2500 at $4\%$ per year for $3$ years.
Solution: $I = \dfrac{2500 \times 4 \times 3}{100} = 300$ rupees.

2. What principal would earn Rs. 600 as interest in $3$ years at $5\%$ per year?
Solution: $P = \dfrac{100 \times 600}{5 \times 3} = 4000$ rupees.

3. At what rate would Rs. 800 amount to Rs. 920 in $2$ years?
Solution: Interest $= 920 - 800 = 120$. $R = \dfrac{100 \times 120}{800 \times 2} = 7.5\%$ per year.

Level 3 — Hard

1. A sum of money doubles itself in $10$ years at a certain rate of simple interest. Find the rate.
Solution: If the money doubles, the interest equals the principal. So $I = P$. From the formula: $P = \dfrac{P \times R \times 10}{100}$, giving $R = 10\%$ per year.

2. Rs. 5000 is lent at $6\%$ per year for $2$ years, and another Rs. 3000 at $8\%$ per year for the same period. Find the total interest.
Solution: First interest $= \dfrac{5000 \times 6 \times 2}{100} = 600$. Second interest $= \dfrac{3000 \times 8 \times 2}{100} = 480$. Total $= 1080$ rupees.

3. A person takes a loan of Rs. 10,000 at $12\%$ per year simple interest. After how many years will the amount become Rs. 14,800?
Solution: Interest $= 14800 - 10000 = 4800$. $T = \dfrac{100 \times 4800}{10000 \times 12} = 4$ years.

1. Print — Use A4 paper and a pen.
2. Warm up — Solve one direct question to get the formula fresh.
3. Time yourself — 15 minutes for Level 1, 25 for Level 2, 35 for Level 3.
4. Check answers — Use the answer key.
5. Revise mistakes — Redo every wrong question with full formula steps.
6. Try again — Retry wrong questions next day.

Daily plan: 20 to 25 minutes per day for two weeks.

Weekly revision: Each Sunday, make up two of your own word problems about a loan or a deposit and solve them.

1. Forgetting to divide by 100 — The formula has a $100$ in the denominator because the rate is a percentage.

2. Time in months — Using time in months without converting to years. Six months is $0.5$ years, not $6$.

3. Confusing interest with amount — The amount is principal plus interest. Do not confuse the two.

4. Rate as a decimal — Writing $5\%$ as $0.05$ in the formula. The formula expects the rate as a whole number (because of the $\div 100$). Using $5$ is correct, not $0.05$.

5. Rounding too early — Rounding midway can change the final answer by a few rupees. Keep exact values until the end.

6. Unit errors — Forgetting to write rupees in the final answer.

CBSE (NCERT)
Simple Interest is introduced in the Comparing Quantities chapter of NCERT Class 7. Weightage is around $3$ to $5$ marks, as it is only one part of that larger chapter.

ICSE (Selina / ML Aggarwal)
ICSE has a dedicated Simple Interest chapter. Weightage is around $8$ marks. ICSE expects students to handle all four kinds of questions (finding I, P, R, T) with equal ease.

IB MYP
IB MYP includes simple interest under Financial Mathematics. The approach is applied and often involves comparing different interest scenarios.

Download your free Class 7 Simple Interest worksheet:

* Simple Interest ICSE Worksheet

Online practice:

* Simple Interest Online — ICSE

* AI Maths Solver — Upload any simple interest problem for a step by step solution.
* Spark Coach — Guided AI tutor.
* Class 7 Maths Complete Guide
* All Worksheets Hub
* Class 7 Formulas

Week 1: Formula mastery

* Day 1: Read the chapter and write out the formula and its three rearrangements.
* Day 2: Level 1 questions 1 to 10.
* Day 3: Level 1 questions 11 to 20.
* Day 4: Level 2 find P and find R questions.
* Day 5: Level 2 find T and amount questions.
* Day 6: Redo wrong answers.
* Day 7: Rest.

Week 2: Word problems

* Day 8: Level 3 questions 1 to 10.
* Day 9: Level 3 questions 11 to 20.
* Day 10: Redo wrong Level 3 answers.
* Day 11: Make up your own word problems.
* Day 12: Mixed quiz.
* Day 13: Mock test (30 minutes).
* Day 14: Review.

* Class 7 Percentage, Profit and Loss Worksheet
* Class 7 Comparing Quantities Worksheet
* Class 7 Fractions and Decimals Worksheet
* Class 7 Simple Equations Worksheet
* Class 7 Maths Complete Guide