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1.2 Approximating numbers
Good morning!
Schedule:
Learning goals
Homework questions
Rounding quiz
Math is cool/what does it mean to be exact
Homework
1 / 12
volgende
Slide 1:
Tekstslide
Wiskunde
WO
Studiejaar 4
In deze les zitten
12 slides
, met
interactieve quizzen
en
tekstslides
.
Start les
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Onderdelen in deze les
Good morning!
Schedule:
Learning goals
Homework questions
Rounding quiz
Math is cool/what does it mean to be exact
Homework
Slide 1 - Tekstslide
Learning goals
At the end of this lessons I can:
Round to different degrees of accuracy
Represent number in a different form to be more exact
Slide 2 - Tekstslide
Homework questions
Please take 5 min and see if you can answer the questions on the Padlet.
Any unanswered questions I will discuss on the board.
Slide 3 - Tekstslide
It takes 0.0000033356 seconds for light to travel 1 km. Round this number to 3 significant figures.
Slide 4 - Open vraag
round π to 4 decimal places
π ≈ 3.1415926535
Slide 5 - Open vraag
Round π to the nearest hundredth.
π ≈ 3.1415926535
Slide 6 - Open vraag
is 0.999999999...
a rational or irrational number?
A rational number
An irrational number
Slide 7 - Poll
What does it mean to be exact?
I am going to prove that 0.999999... = 1
Slide 8 - Tekstslide
What does it mean to be exact?
First, if x = 0.9999999...
calculate:
10x =
9x =
Remember 10x - x = 9x
Slide 9 - Tekstslide
What does it mean to be exact?
x = 0.99999999... and 9x = 9
So, is 0.999999... rational or irrational?
Slide 10 - Tekstslide
What does it mean to be exact
Some numbers might
appear
or
act
a certain way, but can be
rewritten
to
act
or
appear
another way.
We can represent some numbers a certain way to be more exact.
Ex.
=
√
3
2.23606797749978969...
Slide 11 - Tekstslide
Homework
P. 33-34: Practice 5(1, 3, 5, 6, 9)
P. 35: Practice 6
Due Tuesday 27-9
Slide 12 - Tekstslide
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