Significant figures

Significante figures and decimals
3Tha
1 / 32
next
Slide 1: Slide
NatuurkundeMiddelbare schoolvwoLeerjaar 3

This lesson contains 32 slides, with interactive quizzes and text slides.

time-iconLesson duration is: 50 min

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.
  1. 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
  1. 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