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Significant figures
Significante figures and decimals
3Tha
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Slide 1:
Slide
Natuurkunde
Middelbare school
vwo
Leerjaar 3
This lesson contains
32 slides
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interactive quizzes
and
text slides
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Lesson duration is:
50 min
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Items in this lesson
Significante figures and decimals
3Tha
Slide 1 - Slide
Today
Recap scientific notation
Decimals and significant figures
Questionsrounds
Slide 2 - Slide
0,83 dm^2= mm^2
A
83 mm^2
B
0,0083 mm^2
C
8300 mm^2
D
0,000083 mm^2
Slide 3 - Quiz
1 m^3= L
A
1000 L
B
10L
C
0,001 L
D
0,1 L
Slide 4 - Quiz
Reken om naar mg:
134 ng
Slide 5 - Open question
Write without prefix and in the scientific notation
12 MN= N
A
1,2*10^6 N
B
1,2*10^-6 N
C
12 000 000 N
D
1,2*10^7 N
Slide 6 - Quiz
Convert and write in the scientific notation.
0,34 cm= mm
A
3,4*10^-1 mm
B
3,4*10^1 mm
C
3,4*10^0 mm
D
3,4 mm
Slide 7 - Quiz
write without prefix and in the scientific notation
98 kW= W
Slide 8 - Open question
Goals
After totday you know the difference between decimals and significant figures.
After today you know the 4 rules for significant figures
Slide 9 - Slide
What is the difference between 24 en 24,0
Slide 10 - Open question
Decimals
Decimals are all the numbers after the decimal mark
Example
5,8 Has 1 decimal
5,82 Has 2 decimals
5,820 Has 3 decimals
Slide 11 - Slide
How many decimals has:
72,30780 dm
A
6
B
4
C
7
D
5
Slide 12 - Quiz
Significant figures
Wat is the length of the rectangle in cm. Give you answer as accurate as possible on the next page.
Slide 13 - Slide
What is the length of
the rectangle
Slide 14 - Mind map
Significant figures
To be honest, the last figure you noted in your number is an estimate.
Slide 15 - Slide
Significant figures
Slide 16 - Slide
Significante cijfers
4 rules.
Numbers which are not 0 are significant
(so 1, 2, 3, 4, 5, 6, 7, 8 en 9)
Slide 17 - Slide
Significante cijfers
4 rules.
1. Numbers which are not 0 are always significant
(so 1, 2, 3, 4, 5, 6, 7, 8 en 9)
2. zeroes before non-zeroes are not significant numbers.
Slide 18 - Slide
Significante cijfers
4 rules.
1. Numbers which are not 0 are always significant
(so 1, 2, 3, 4, 5, 6, 7, 8 en 9)
2. zeroes before non-zeroes are not significant numbers.
3. zeroes after non-zeroes are significant
Slide 19 - Slide
Significante cijfers
4 rules.
1. Numbers which are not 0 are always significant
(so 1, 2, 3, 4, 5, 6, 7, 8 en 9)
2. zeroes before non-zeroes are not significant numbers.
3. zeroes after non-zeroes are significant
4. x10^.... is not significant
10-machten tellen
niet
mee.
Slide 20 - Slide
Questionround
Slide 21 - Slide
How many significant figures??
405,070
A
3
B
4
C
5
D
6
Slide 22 - Quiz
How many significant figures?
0,000234000
A
3
B
6
C
9
D
10
Slide 23 - Quiz
How many significant figures
567,3 kg
Slide 24 - Mind map
How many significant figures?
1,0000000003 m
Slide 25 - Mind map
How many significant figures?
-15,3 N
Slide 26 - Mind map
How many significant figures?
5 mensen
Slide 27 - Mind map
how many significant figures?
0,01000000000000054 m/s
Slide 28 - Open question
How many significant figures?
10,07*10^5 dam
Slide 29 - Open question
There is a mistake in the last slide, what was it? Who has spotted the mistake?
Slide 30 - Slide
Wat heb je vandaag geleerd?
Slide 31 - Open question
Homework
Exercises paragraph 3.3
page 1 and 2
Slide 32 - Slide
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