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Ronald Hui Mathematics Revision: Arithmetic Operations & Number Basics

Get ready to improve your math skills with Ronald Hui's revision on arithmetic operations like addition, subtraction, multiplication, and division, and learn about natural numbers, even and odd numbers. Practice dictation and multiplication table. Stay engaged with fun math challenges!

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Ronald Hui Mathematics Revision: Arithmetic Operations & Number Basics

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  1. Mathematics Ronald Hui Tak Sun Secondary School

  2. Mathematics • What have you visited here? • http://personal.tsss.edu.hk/roh • Have you started your homework? • Standard Homework (II) • Deadline: 14 Sep (Wed) • Are you ready for Dictation? Ronald HUI

  3. Revision • Arithmetic Operations • “+” – Addition • Add… to…, Plus, Sum • “–” – Subtraction • Subtract… from…, Minus, Difference • “x” – Multiplication • Multiply… by…, Times, Product • “” – Division • … is divided by…, Over, Quotient Ronald HUI

  4. Revision • Numbers • Natural Number (自然數) • Whole Number (完整數) • Even Number (偶數，雙數) • Odd Number (奇數，單數) • Division • Dividend (被除數), Divisor(除數), • Quotient(商), Remainder(餘數) Ronald HUI

  5. Dictation 1 • Words will be read twice • 8 words • 4 expressions • Write them out in words • Example: • Question: 4 – 3 • Answer: Four minus Three Subtract three from four Ronald HUI

  6. Dictation 1 • Listen the words carefully • 1. • 2. • 3. • 4. • 5. • 6. • 7. • 8. Ronald HUI

  7. Dictation 1 • Example: 3 x 4 Three times Four • Write the followings in words • 9. 11 x 12 • 10. 22 – 16 • 11. 33 + 44 • 12. 52  13 • If you finish, please keep quiet! Ronald HUI

  8. Revision • Prime numbers (質數) • 2,3,5,7,11,13,17,19,23,… • Multiples (倍數) • Multiples of 2: 2, 4, 6, 8, … • Multiples of 3: 3, 6, 9, 12, … • Factors (因子) • 2 is a factor of 2, 4, 6, 8, … • 3 is a factor of 3, 6, 9, 12, … Ronald HUI

  9. Multiplication Table Ronald HUI

  10. Revision • Find all factors of 18. • 18 = 1 x 18 • 18 = 2 x 9 • 18 = 3 x 6 • 18 = 6 x 3 • 18 = 9 x 2 • 18 = 18 x 1 • Factors of 18: 1, 2, 3, 6, 9, 18 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)? Ronald HUI

  12. Mathematics nearby • 64 players  32 matches • 32 players  16 matches • 16 players  8 matches • 8 players  4 matches • 4 players  2 matches • 2 players  1 match --------------- 63 matches Ronald HUI

  13. Mathematics nearby • 64 players • 1 winner • 63 losers • So, 63 matches! • Lateral Thinking • Edward de Bono Ronald HUI

  14. Mathematics nearby • In the English Premier League (英國超級聯賽), there are 20 football teams. • Each will play with every other in a home match (主場) and an away match (作客). • How many matches are there in the League every year? Ronald HUI

  15. Good Luck! Enjoy the world of Mathematics! Ronald HUI

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