**Compound
Interest Class 8 Worksheets**

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the students by giving them these worksheets to the students to solve.

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these questions to the students to test them. Unit tests can also be prepared
by the teachers using these questions.

**Compound
Interest Class 8 Worksheet 1**

**1. **In how many years, Rs 120 will produce the
same simple interest as Rs 640 produce in 3 years at same rate of interest 3^{1}/_{2}
% p.a.?

**2.
**Match the following:

a.
Principal = Rs 1200, rate = 6%, time = 4 years, then SI = i. Rs 24

b.
Principal = Rs 40000, rate = 7% p.a., time = 2 years, then CI = ii. Rs 5796

c.
Principal = Rs 160, rate = 3% p.a., time = 5 years, then SI = iii. Rs 702

d.
Principal = Rs 5400, rate = 3 14 %, time = 4 years, then SI = iv. Rs 68

e.
Principal = Rs 3400, rate = 2%, time = 1 year, then CI = v. Rs 288

**3. **A sum was lent at simple interest at a certain rate for 5 years.
Had it been 1% higher rate, it would have fetched Rs 50 more. What is the sum?

**4.
**A sum of money doubles in 6 years. In how many
years, it will treble at SI?

**5.
**State true or false.

a.
Simple interest allows you to earn interest on interests.

b.
In simple interest, the principal remains constant for the entire loan period.

**6. **The difference between CI and SI on a certain sum of money for 2
years at 5% per annum is Rs 1. What is the sum?

**7. **A man deposited Rs 6000 in a bank at 8% p.a. simple interest for 4
years. For how many years must another man deposit an amount of Rs 6400 at 6%
p.a. in another bank so that both of them get the same interest?

**8. **The simple interest on a certain sum of money
for 4 years at 8% per annum is half the simple interest on Rs 4000 for 2 years
at 10% per annum. Find the sum.

**9.
**A sum of money lent at compound interest
annually amounts to Rs 250 and Rs 300 in the first and the second year. Find
the rate of interest.

**10. **Minakshi borrowed two loans at simple interest
i.e., one for Rs 10,000 at 4% per annum and the other for Rs 15000 at 6% p.a.
for the same period. If she paid Rs 6500 as total interest, find the period for
which the loans were taken.

**11. **Calculate the amount due and the compound
interest on Rs 15000 in 2 years when the rate of interest on successive years
is 7% and 9% respectively.

**Compound
Interest Class 8 Worksheet 2**

**1. **At what rate of compound interest will Rs 20000
becomes Rs 24200 after 2 years?

**2. **Find the simple interest on Rs 9520 at 8.4%
per annum for 4 years 8 months.

**3. **Choose the correct option.

a. The compound
interest and simple interest for the 2nd year on a sum are

i. same ii. different iii. depends on sum iv. depends on rate of interest

b. Principal +
Interest = ________

i. Time ii. Compound Interest iii. Amount iv. Rate of interest

c. What will be
the interest when Rs 100 is invested for 3 months at the rate of 2.5% per
quarter?

i. Rs 2.5 ii. Rs 25 iii. Rs 10 iv. Rs 30

d. In the case of
compound interest, the principal ________ every year.

i. constant ii. depends on rate iii. depends on sum iv. changes

**4. **Find the difference between the compound
interest and the simple interest on Rs 6000 for 3 years at 10% per annum.

**5. **Find the simple interest on Rs 13870 at 7^{1}/_{2}
% p.a. from 15th August 2011 to 20 January 2012. Also, find the amount.

**6. **The difference between CI and SI for 2 years
at 10% per annum is Rs 50. Find the sum.

**7. **Simple interest on a certain sum of money for
2 years at 6^{1}/_{2} % per annum is Rs 5200. What will be the
compound interest on the sum at the same rate and for the same period?

**8. **Nitish borrowed some money from a money lender
at 20% p.a. compound interest. After 3 years, she paid Rs 582.40 as CI to the
money lender. What amount did she borrow?

**9. **Find the compound interest at 5% p.a. for 3
years on the same principal which gives simple interest of Rs 2400 at the same
rate and for the same time.

**10. **At what time will Rs 5400 yield Rs 1373.76 as
compound interest at 12% p.a.?

**11. **Priti deposited Rs 2,40,000 with a private
company for a period of 9 months. The company credits the interest in her
account at 3% quarterly. What interest did she get?

**12. **Hema borrowed Rs 2000 at 20% p.a. simple interest.
Find the amount of money he needs to pay after 1^{1}/_{2}
years.

**13. **Meera invests Rs 93750 at 9.6% per annum for 3
years and the interest is compounded annually, calculate:

a. the amount
outstanding to him at the end of second year.

b. the interest
for third year.

**14. **If the interest charged for 9 months be 0.18
times the money borrowed. Find the rate of SI per annum.

**15. **A sum of money lent at compound interest
yields Rs 100 at the end of 1st year and Rs 105 at end of 2nd year. Find the
rate % per annum.

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