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1TH/vwo §11.3 Multiplication and addition
Here are the LIKE TERMS again, never leaving us alone.
However, recognising them makes your Maths life easier!
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Middelbare school
havo, vwo
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Here are the LIKE TERMS again, never leaving us alone.
However, recognising them makes your Maths life easier!
Slide 1 - Diapositive
Task: Try to find the final answer for the easiest one.
Remember your answer, because you won't see the task in the next slide!
Slide 2 - Diapositive
The answer to the easiest one is:
A
25
B
50
C
269
D
250
Slide 3 - Quiz
Solution:
Did you notice that this task was all
about LIKE TERMS?
The terms 8 x and
2 x are the like terms here.
They are added up, as you can see.
5
2
5
2
Slide 4 - Diapositive
Solution:
Slide 5 - Diapositive
Slide 6 - Diapositive
Slide 7 - Diapositive
Task: Which tasks(s) has LIKE TERMS: A, B or C?
Slide 8 - Diapositive
Like terms are in:
A
A
B
B
C
C
D
A and C
Slide 9 - Quiz
Task: Shorten formula A. Give your answer
in the next slide.
Slide 10 - Diapositive
Answer A
Slide 11 - Carte mentale
Task: Shorten formula A.
SOLUTION:
s
=
7
t
2
Slide 12 - Diapositive
Slide 13 - Diapositive
A. Intro to the coming THEORY (1)
Do you remember this, about shortening?
This was taken from Ch 10. The same thing applies with squares!
Watch the next slide and be amazed.
1
x
=
x
−
1
x
=
−
x
1
f
=
f
−
1
f
=
−
f
Slide 14 - Diapositive
B. Intro to the next slide (2)
Basic rules: 1f = f or f = 1f and -1h = -h or -h = -1h
4f + 3f = 7f
4f + f = 4f + 1f = 5f
7d - d = 7d - 1d = 6d
Next we will look at similar calculations, only now with quadratic tasks!
Slide 15 - Diapositive
Which one is true?
A
-1v = -v
B
v + v = v
C
-v -v = 2v
D
-v + v = 0
Slide 16 - Quiz
Solution:
A. -1v = -v is correct, because '1' can be left out
B. v + v = v is wrong, because v + v = 1v + 1v = 2v
C. -v - v = 2v is wrong, because -v -v = -1v -1v = -2v
D. -v + v = -1v + 1v = 0 is correct
Slide 17 - Diapositive
Slide 18 - Diapositive
Slide 19 - Diapositive
Slide 20 - Diapositive
Slide 21 - Diapositive
Slide 22 - Diapositive
How to solve this exercise?
-see next slide too!-
Slide 23 - Diapositive
How to solve this exercise? Like this:
FIRST WORK THEM OUT; ONLY THEN YOU CAN MAKE PAIRS!
Slide 24 - Diapositive
FIRST WORK THEM OUT; ONLY THEN YOU CAN MAKE PAIRS!
Okay, let's do a bit together now:
1. x =
So now it is obvious that formula 1 and formula 7 are equal!
When doiung 21 for homework, work them all out and only then combine them!
p
=
k
k
k
2
Slide 25 - Diapositive
Homework time.
Do §11.3 now.
+ you may skip: 15 and 16
+ VWO: 18 t/m. 23 and C4+C5
Slide 26 - Diapositive
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