1. Solve problems involving
simple interest

2. Change percent to decimal.
1. 25%
2. 3.5%
3. 4
1
2
%
4. 100%
5. 0.02%

3. Interest – is a fee paid for borrowing
money.
– the amount borrowed is
called the principal
– the interest is expressed as a
percentage rate of the principal
for the given time interval

4. I
P r t
Where:
I – Interest
P – Principal
r– rate of interest
T - time
I=Prt
P =
𝐼
𝑟𝑡
r =
𝐼
𝑃𝑡
t =
𝐼
𝑃𝑟

5. 1. Find the simple interest on the
account Php 50,000.00 at 7% rate
of interest for 2 years.
I = ? Given:
P= 50,000
r= 7% or 0.07
t= 2 years
I = Prt
I = ( 50,000)( 0.07) ( 2) = 7,000

6. You can give another example when the
rate is unknown, time or the Principal.
Group activity.
Evaluation
Assignment