One quantity as a percentage of another

Good morning!
Schedule: 
  • Learning goals 
  •  One quantity as a percentage of another
  • Create your own question 
  • Work 
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Slide 1: Diapositive
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Good morning!
Schedule: 
  • Learning goals 
  •  One quantity as a percentage of another
  • Create your own question 
  • Work 

Slide 1 - Diapositive

Learning goals 
At the end of this lesson I can:
  • Write one quantity as a percentage of another 
  • Create a percentage problem myself

Slide 2 - Diapositive

What is your age?
10
11
12
13
14
15

Slide 3 - Sondage

One quantity as a percentage of another

What percentage of the class is 12 years old? 


What percentage of the class is 11 years old? 

Slide 4 - Diapositive

One quantity as a percentage of another 
"Express 24 minutes as a percentage of 1 hour"

1. We can only compare like with like (same unit)
2.  Write as a fraction
3.  Multiply by 100%
4.  Simplify 

Slide 5 - Diapositive

Express 12 students as a percentage of 40 students

Slide 6 - Question ouverte

Slide 7 - Diapositive

51.7 % 
72.9 %
21.5 % 
0.9 % 
2.6 % 
36.8 % 

Slide 8 - Diapositive

Your own question!
With your neighbour: 


- Come up with a real-life question where you need to represent one quantity as a percentage of another
(ex. Express 56 marks as a percentage of 80 marks)
- Make sure you work out your problem as well. 
Criterion D

Slide 9 - Diapositive

Work
p. 185              9D:  1acegik, 2bdfhj, 3, 4, 5

Slide 10 - Diapositive