1TH/vwo §9.1/2/3 PRACTICE !

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Slide 1: Diapositive
WiskundeMiddelbare schoolhavo, vwoLeerjaar 1

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Slide 1 - Diapositive

Slide 2 - Diapositive

Practice, practice, practice ......
§10.1   §10.2  §10.3
WE pay some more attention to these paragraphs, now.

Slide 3 - Diapositive

Shorten as much as you can:
y = 3 x f + 6
timer
0:20
A
y = 3f + 6
B
3f + 6
C
y = 9f
D
y = 9 x f

Slide 4 - Quiz

Solution:
                                                          y = 3 x f + 6
The only thing you can do here is leave out the 'x' !
So:                                                   y = 3f + 6
Not  y = 9f, because 3f and 6 are NOT LIKE TERMS!

Slide 5 - Diapositive

a = 4b + 6c
timer
0:20
A
a = 10bc
B
a = 4b + 6c
C
4b + 6c
D
10bc

Slide 6 - Quiz

Solution:
a = 4b + 6c   
There is absolutely, sad as it might be, nothing you can do
about it....
It just stays the same. You cannot add up 'b-s' and 'c-s'.

Slide 7 - Diapositive

What does ' a fee' mean in dutch?
A
een trapleuning
B
een stuks vee
C
een fee
D
een vergoeding

Slide 8 - Quiz

t = 6h + 4f and
4f + 6h = t mean the same.
timer
0:20
A
false
B
true

Slide 9 - Quiz

Shorten this:
d = 5 -3t -6 + 5t
timer
0:25
A
d = 1 + 2t
B
d = -1 -2t
C
d = -1 + 2t
D
d = 2t - 1

Slide 10 - Quiz

Solution:
d = 5 - 3t - 6 +5t
Take together the LIKE TERMS:
d = 5 - 6 - 3t + 5t
d = -1 + 2t     or    d = 2t -1

Slide 11 - Diapositive

timer
0:30
Translate: Lorry drivers have to pay to use the ferry.

Slide 12 - Carte mentale

Translation:
Lorry drivers have to pay to use the ferry =
vrachtwagenchauffeurs moeten betalen om de boot te gebruiken.

Slide 13 - Diapositive

Calculate g when p = 6 in
g = 5p -6
timer
0:25
A
-24
B
50
C
24
D
5

Slide 14 - Quiz

Solution:
g = 5p - 6
Replace the letter p (the VARIABLE) with the number 6 :
g = 5 x 6 - 6 
g = 30 -6
g = 24

Slide 15 - Diapositive

Let's freshen up your knowledge from §9.3 :

Slide 16 - Diapositive

Slide 17 - Diapositive

Slide 18 - Diapositive

Calculate
t = 8 -5 (4 - c) when c = 2
timer
0:45
A
6
B
2
C
-6
D
-2

Slide 19 - Quiz

Solution:  
Calculate t = 8 - 5(4 - c)   when  c = 2.
As follows:   replace the letter c with the number 2 :
t = 8 - 5(4 - 2)                   Now work out the brackets first:
t = 8 - 5 x 2   Do you see the RETURN of the 'x'- sign!?
t = 8 - 10  so
t = -2


Slide 20 - Diapositive

What does 'charity' mean?
timer
0:15
A
fijne stoel
B
bestemming
C
liefdadigheid
D
wedloop

Slide 21 - Quiz

p = 13 - 2h
Calculate p when h = -4
timer
0:30
A
-21
B
5
C
21
D
-5

Slide 22 - Quiz

solution:
p = 13 - 2h            
fill in h = -4
p = 13 - 2 x -4
p = 13 + 8
p = 21

Slide 23 - Diapositive

shorten as much as possible:
t = -1r - - t
timer
0:20
A
t = 1r - t
B
t = -r + t
C
t = r - t
D
t = 1 + t

Slide 24 - Quiz

Solution:
t = - 1r - - t
as we know:       - 1r = - r.                and         - - t = + t
so the answer is:
t = -r + t

Slide 25 - Diapositive

Done enough practice?
If so, then it's time to work on your own now!

Slide 26 - Diapositive

Homework time
+      Finish all the tasks from:                  
         § 9.1                  t/m                § 9.4
+      Done? Then:   
         Check all your work with Solutionsbook!     
         

Slide 27 - Diapositive

Slide 28 - Diapositive