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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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Slide 1:
Slide
Wiskunde
Middelbare school
havo, vwo
Leerjaar 1
This lesson contains
26 slides
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interactive quizzes
and
text slides
.
Lesson duration is:
45 min
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Items in this lesson
Here are the LIKE TERMS again, never leaving us alone.
However, recognising them makes your Maths life easier!
Slide 1 - Slide
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 - Slide
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 - Slide
Solution:
Slide 5 - Slide
Slide 6 - Slide
Slide 7 - Slide
Task: Which tasks(s) has LIKE TERMS: A, B or C?
Slide 8 - Slide
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 - Slide
Answer A
Slide 11 - Mind map
Task: Shorten formula A.
SOLUTION:
s
=
7
t
2
Slide 12 - Slide
Slide 13 - Slide
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 - Slide
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 - Slide
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 - Slide
Slide 18 - Slide
Slide 19 - Slide
Slide 20 - Slide
Slide 21 - Slide
Slide 22 - Slide
How to solve this exercise?
-see next slide too!-
Slide 23 - Slide
How to solve this exercise? Like this:
FIRST WORK THEM OUT; ONLY THEN YOU CAN MAKE PAIRS!
Slide 24 - Slide
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 - Slide
Homework time.
Do §11.3 now.
+ you may skip: 15, 16 and 17
+ H/V: S16, S18, 19, 20, 21, 22,
+ VWO: 18. t/m. 23. and C4+C5
Slide 26 - Slide
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