14.4A Percentages

• Wiskunde
• Middelbare school
• havo
• Leerjaar 3

14.4A Percentages

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• Start (5 min)
• New subject wiA (10 min)
• New subject wiB (20 min)
• Bettermarks (20 min)
• Exercises together (10 min)
• Bettermarks (10 min)
• End lesson (5 min) 

Calculate 37% of 468

Calculate 37% of 468

Every year a population grows by 6%, calculate the growth factor

Every year a population grows by 6%, calculate the growth factor

The population consists of 200.000 people, calculate the number of people after 2 years

The population consists of 200.000 people, calculate the number of people after 2 years

Note 14.4A

If the value of a quantity increases by ⁣p%, then it grows by the factor:

If the value of a quantity decreases by ⁣p%, then it changes by the factor:

growth factor=1−​100​​p​​

growth factor=1+​100​​p​​

The number of students decreases by 13%. Calculate the growth factor.

Bettermarks

• Work on 14.4A
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