Mathematical Quickies & Trickies
À propos de cet e-book
* grades 5-7 students and teachers looking for some fertile trick and tricky questions;
* mathletes preparing for local and regional contests and competitions;
* problem solvers longing to be challenged by questions whose obvious solutions are never the correct ones for what offhand appears to be true is false.
With proper insight, you’ll learn how to solve these tricky problems almost instantly, whose solutions are almost never the correct ones. You need no longer be caught off-guard; instead, you’ll learn to solve these questions confidently—how to tame these counter-intuitive questions into routine ones.
Contents
1. Mental Computation I
2. Mental Computation 2
3. Number Series
4. A Tricky Way with Fractions
5. Test Your Calculator Proficiency
6. Simplifying a Complex Fraction
7. Recurring Decimals
8. Is Zero an Even or Odd Integer?
9. Casting Out Nines
10. Be a Calculator Expert
11. Division by 9
12. Number Riddles
13. Ten Steps to be Math Smart
14. Shortcuts a la Trachtenberg
15. Geometrical Quickies 1
16. Geometrical Quickies 2
17. Geometrical Quickies 3
18. (Sugar + Coffee) + Milk = Sugar + (Coffee + Milk)
19. Applications of Number Laws
20. Law of One
21. Distributive Law
22. More Applications of Distributive Law
23. The Joy of Guesstimation
24. Are You a Fermi Disciple?
25. Bravo Singapore
26. Lightning Calculators
27. Geometrical Quickies 4
28. Some Calculator Quickies
Answers & Solutions
Bibliography & References
Type of e-book: Nonfiction, problem solving, recreational, Singapore math, trick questions
Audiences: Suitable for Grades 4-7 (or Primary 4-7 levels)
Notes et avis
À propos de l'auteur
Yan Kow Cheong ([email protected]
He has ghostwritten and edited both local and foreign textbooks and assessment titles for students, teachers, and parents. Some of his publications are Additional Maths 360, More Mathematical Quickies & Trickies, Aha! Math, and CHRISTmaths: A Creative Problem Solving Math Book. http://tinyurl.com/
His academic interests involve research in math education, in particular, the psychology of learning and teaching mathematics, and creative problem solving. He is a life member of both the Singapore Mathematical Society (SMS) and the Association of Mathematics Educators (AME). He is also a member of The Association of Christians in the Mathematical Sciences(ACMS).
For information about the author, click https://sites.google.
Fan Page for the Mathematical Quickies & Trickies series, click fb.com/singaporemathplus
