1. Ronald Hui Tak Sun Secondary School
Mathematics
Ronald Hui
Tak Sun Secondary School

2. Mathematics Keep silence in the class No talking when I talk
What should be ready in the next lesson?
Textbook
Erasable Pens/Pencils
Notebook & folder
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3. Words for Dictation “+” Addition “–” Subtraction “x” Multiplication
Plus Sum (和)
“–” Subtraction
Minus Difference (差)
“x” Multiplication
Times Product (積)
“” Division
Is divided by Quotient (商)
Divisor (除數) Remainder(餘數)
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4. Words for Dictation Numbers Natural Number (自然數) Whole Number (完整數)
1, 2, 3, 4, 5, …
Whole Number (完整數)
0, 1, 2, 3, 4, 5, …
Even Number (偶數，雙數)
0, 2, 4, 6, 8, …
Odd Number (奇數，單數)
1, 3, 5, 7, 9, …
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5. Dictation Words will be read twice 4 expressions 8 words
Write them out in words
Example:
Question: 4 – 3
Answer: Four minus Three
Subtract three from four
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6. Dictation Listen the words carefully 1. 2. 3. 4. 5. 6. 7. 8.
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7. Dictation Example: 3 x 4 Three times Four
Write the followings in words
x 12
– 16
 13
If you finish, please keep quiet!
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8. Reminder
Homework Clinic
Tuesday after-school
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9. Wikipedia 維基百科 https://en.wikipedia.org/wiki/Arithmetic
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10. Mathematics nearby
How many times did the minute-hand (分針) overlap (重疊) with the hour-hand (時針) of a clock in a day?
12:00, 1:06, 2:11, 3:17, 4:22, 5:27, 6:33, 7:38, 8:43, 9:49, 10:54
22 times!
Ronald HUI

11. Mathematics nearby
In US Open (美國網球公開賽), 64 players are in the first round, how many matches will be played to find out the champion?
In English FA Cup (英國足總盃), 64 teams in the third round, how many matches will be played if there is no re-match (重賽)?
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12. Enjoy the world of Mathematics!
Good Luck!
Enjoy the world of Mathematics!
Ronald HUI