1. Percentage

2. Arrangement Before the Christmas Holiday
This week: Percentage Next Week: Basic knowledge of 2D and 3D shape and revision The week before Christmas: Revision (Monday) and Two Tests: All the topics you have learned (Fraction and Decimal, Problem solving, Investigating Pattern, Algebra, Equation, Percentage and Basic knowledge of 2D and 3D shape)…. Summative Assessment: The topic of Summative Assessment is: Investigating Pattern and Algebra (Simple substitution)—Criteria A and C Materials for revision: 1, Textbook and Math Journal 2, 5-level growing pattern worksheet 3, One of the test paper 4, Mathletics

3. Definition of Percentage
A number out of 100

4. Questions:
9 out of 100=?%
3.4 out of 100=?%
120 out of 100=?%

5. Questions
25/100 =?% 21/100=?% 42/100=?% 4.6/100=?%

6. Converting Fraction to Percentage
25/100 =25% 21/100=21% 42/100=42% 4.6/100=4.6%
1/4= ? % 1X25 4X25 =25/100=25%

7. Converting Fraction to Percentage
A, 1/20=?% B, 4/5=?%

8. A number out of 100
1X5 20X5 =5/100 =5%

9. Percentage to Fraction
25/100 =25% 21/100=21% 42/100=42% 4.6/100=4.6%
25%=? 21%=? 42%=? 4.6%=?

10. A number out of 100
25%=25/100=1/4 21%=21/ %=4.6/100=46 /1000=23/500
Simplify /simplest form! %---divided by 100

11. Questions:
Watch a clip and answer: 1, What is another way of changing fraction to percentage? 2, How to change decimal to percentage? 3, There is a mistake in the clip! Can you find out?

12. Decimal to Percentage

13. Moving the decimal point two places forward!
How can we choose the different strategies in changing fraction to percentage?
Fraction---- Decimal-----Percentage
How to change decimal to percentage?
X100%
0.23X100%=23
Moving the decimal point two places forward!

14. Which strategy to Choose?
3/4
5/9
5/8
2/7
…….

15. Practice
0.73=?% 0.073=?% 7.3=?%

16. Change Percentage to Decimal
0.73=?% 0.073=?% =?% 7.3=?%
73%=? 7.3%=? 0.73%=? 730%=?

17. Homework
My Pals are here 6A (the Blue textbook) Page 214 Question 1-7 and choose 2 from Question 8-12 to do (No calculator! It can only be used it to check your answers!)