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GR HFD 5 Calculation Prior Knowledge
5
Calculating
prior knowledge
1 / 15
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Slide 1:
Slide
Wiskunde
Middelbare school
vwo
Leerjaar 1
This lesson contains
15 slides
, with
interactive quizzes
and
text slides
.
Lesson duration is:
30 min
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Items in this lesson
5
Calculating
prior knowledge
Slide 1 - Slide
No Use of Calculator
!!!
Slide 2 - Slide
What kind off number is:
0.538
A
fraction
B
negative number
C
decimal number
D
Radio station
Slide 3 - Quiz
0.7
0.001
2 + 10/20
7/10
3/3000
2.5
Slide 4 - Drag question
These are examples of decimal numbers
Slide 5 - Slide
Calculating with decimal numbers
adding
and
subtracting
Slide 6 - Slide
adding and subtracting of decimal numbers are going like this:
4 + 5 = 9 4 - 5 = -1
4 + 0.005 = 4.005 4 - 0.005 = 3.995
0.4 + 0.05 = 0.45 0.4 - 0.05 = 0.35
Slide 7 - Slide
write down the answers of
50.5 + 0.3
50.5 - 0.03
Slide 8 - Open question
if you have multiple numbers or complex numbers you can put them under each other
5,39 + 6,1 + 13,54
under each other
5. 3
9
5. 39
5. 39
6. 1 6. 1 6. 1
13. 5
4
13. 54 13. 54
_______+ _______+ _______+
3 03 . 03
( 9+4= 13.
write 3 , carry 1 )
Slide 9 - Slide
3.81 + 12.05 + 4.101
A
20.971
B
19.961
C
19.782
D
18.951
Slide 10 - Quiz
3. 81
12. 05
4. 1 0 1
________+
Slide 11 - Slide
Multiplying
2.3 x 7.26 => 7. 2 6 -> 2 digits behind the decimal
2. 3 -> 1 digit behind the decimal
________x
2 1 7 8
1 4 5 2 0
_________+
1 6. 6 9 8
Slide 12 - Slide
what is the answer of
2.24 x 3.2
A
6.382
B
6.688
C
7.338
D
7.168
Slide 13 - Quiz
Homework for monday
Page 182 and 183
exercise 1 till 10
- put it in your agenda
Slide 14 - Slide
you can work on your homework
Slide 15 - Slide
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