1. Form 1 Mathematics Chapter 3
Percentages (I)
Form 1 Mathematics
Chapter 3

2. Result of Close Book Quiz
Full mark: 40 and 10 bonus
Highest: 44
Lowest: 4
Average: 17.5
Number of students between : 16
Number of students between 0 - 9: 7
Major Problems
Don’t understand the question!
Wrong idea on the “old value” in the % change

3. Result of Close Book Quiz
8th place: LAM Long Yin, Ken
6th place(2): WONG Pui Yin, Paul,
WU SHAN Hao Yi
5th place: CHOI King Shing, Walker
4th place: CHEN Yi, David
3rd place: LI Ming Chun, Edward
2nd place: FU Ling Yin
1st place: LI Sai Kong
Congratulations!!!!!! Well done!!!!!!

4. Mathematics nearby Mr. Hui bought a new car with $100,000
He makes up the car well and then try to sell it at a better price. So, he marked up 50% (half).
His friend wants to buy a car also and then he approached Mr. Hui.
Mr. Hui decided to sell it to his friend at a “friendship price” of 50% (half) of the marked price.
Did Mr. Hui gain, lose or no gain no loss?

5. Mathematics nearby Cost Price = $100,000
Marked Price = $100,000 (1+50%)
= $150,000
Selling Price = $150,000 (1-50%)
= $75,000
Since Selling Price < Cost Price, Mr. Hui lost!

6. Reminder Term 1 Examination Syllabus (p.1-185)
Chapter 0: Basic Mathematics
Chapter 1: Directed Numbers
Chapter 2: Using Algebra to Solve Problems (I)
Chapter 3: Percentages (I)
Chapter 4: Using Algebra to Solve Problems (II)
Date of Term 1 Examination
(Wed)
8:30 am – 9:30 am (1 hour)
Room 104

7. Enjoy the world of Mathematics!
Ronald HUI
Enjoy the world of Mathematics!