teacher

1. Republic of the Philippines
Department of Education
REGION VI – WESTERN VISAYAS
SCHOOLS DIVISION OF ILOILO CITY
R.G. HECHANOVA MEMORIAL NATIONAL HIGH SCHOOL
👦
Mathematics

2. 15 x 11=
Drills
165 36 x 11=396
21 x 11= 231 44 x 11=
45 x 11=
484
495

3. Group Activity
1. Find the simple interest on P3,000 at the rate of 5%
for 3 years.
2. Find the simple interest on P3,400 at the rate of
6.5% for 5 years.
3. Find the compound interest on the principal P3,000
borrowed at 5% compound annually for 3 years.
4. Find the compound interest on P3,400 invested at
6.5% compound semiannually for 5 years.

4. Simpleand
CompoundInterest

5. SimpleInterest- is determined by multiplying the
daily interest rate by the principal
by the number of day that elapse
between payments.
in short, we have
I= PRT
where I stand for simple interest, P is
for Principal, R is for Rate and T is for
the number of periods.

6. Example:
I= 𝑷𝑹𝑻
= 3000(.05)(3)
= 450
P R T I
P3000 .05 3
P3400 .065 5
I= 𝑷𝑹𝑻
= 3400(.065)(5)
= 1105

7. Compound
Interest-
is the interest calculated on the
initial principal and also
accumulated interest in the
previous periods of a deposit
or loan.
In formula we have A=P{1+r}n ,
where P stands for Principal, r
for Rate and n for a number of
periods.

8. Example:
A=P{1+r}n
=P3000 {1+.05}3
=P3000(1.16)
= 480
P 1+R T A
P3000 1.05 3
P3400 1.0325 10

9. What is the difference between simple
interest and compound interest?
What is better to use? The simple or
compound interest?

10. Application
For group 1 and 2 you will solve problem number 2 and for
group 3 and 4 you will solve problem number 1.
1. Find the amount of the principal if the interest at 12%
per annum after 8 months is 2400php.
2. If 500php is invested at 8% compounded semiannually,
what will the final amount be after three years?

11. EVALUATION
Directions: Answer the following problems. Write your
complete solutions in a 1 whole sheet of paper.
1. At what interest rate compounded annually will 100php
amount to 229.20 in 17 years?
2. Find the final amount if 200php is invested for 5 years at
6% per annum compounded semiannually
3. Find the simple interest of P9,000 for two years at 4.5%
per year.

12. ASSIGMENT
Directions: In a one whole sheet of
paper, make your own problems
about simple and compound interest
and solve it.