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1TTO §8.5 multiplying fractions
Dagopening:
Grip
Clip Lauren Daigle Hold on to me
Gebed
Mededeling
1 / 28
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Slide 1:
Slide
Wiskunde
Middelbare school
havo, vwo
Leerjaar 1
This lesson contains
28 slides
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interactive quizzes
and
text slides
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Lesson duration is:
30 min
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Items in this lesson
Dagopening:
Grip
Clip Lauren Daigle Hold on to me
Gebed
Mededeling
Slide 1 - Slide
§8.5 Multiplying fractions
After + and - we now look at
the operation: x !
By the way, this is a pretty long LessonUp.
Slide 2 - Slide
First we multiply a fraction by a whole number:
Slide 3 - Slide
Slide 4 - Slide
Now it's your turn:
D
Do: 2 X 33 : 3 = .......
Slide 5 - Slide
3
2
x 33 = ...
Slide 6 - Mind map
solution:
2
Slide 7 - Slide
another one for you:
Slide 8 - Slide
3/13 x 52 = ....
A
10
B
9
C
14
D
12
Slide 9 - Quiz
Solution:
Slide 10 - Slide
Now let's talk business:
Finally it's
Fraction times Fraction ...
Slide 11 - Slide
2nd important point:
2. (in fact good news to some of you, who didn't know it yet!)
When multiplying fractions with unequal denominators,
you don't have to make them equal!!
Watch the next slides that show how simple it really is!
Slide 12 - Slide
Slide 13 - Slide
Slide 14 - Slide
your turn again:
Slide 15 - Slide
3/8 x 3/8 = ...
A
9/8
B
9/64
C
6/16
D
3/64
Slide 16 - Quiz
Solution:
Slide 17 - Slide
Fotovraag: work out on paper, take a pic and send in in next slide!
1st Show your CALCULATION!
2nd This a task for ALL!
Don't forget to SIMPLIFY your answer, in the end!
Slide 18 - Slide
2/7 + 1/7 x 1/2 = ......
Slide 19 - Open question
Solution:
Slide 20 - Slide
Now it's time for a complicated one:
Think about it for a while. After that we look at the solution.
Slide 21 - Slide
This is the Solution:
Slide 22 - Slide
For example this one. You might think:
2 x 3 = 6 and x =
So the final answer is: 6 + = 6 However this is WRONG!
2
1
4
1
8
1
8
1
8
1
Slide 23 - Slide
Let's look back at the previous slide for a sec to see if both methods are good!
Slide 24 - Slide
again work out on paper and send it in.
This time for every-every-every one!
Slide 25 - Slide
1 1/8 x 1 1/3 = ......
Slide 26 - Open question
Solution:
Slide 27 - Slide
Homework:
§8.5 Make 8.5.
Write down your CALCULATIONS.
Showing only the answers has no value.
It's about the process of WORKING them out in LITTLE STEPS!
Slide 28 - Slide
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