# 1TH/vwo §11.2 Multiplication

§11.2 Multiplication
Ultra short RECAP:
-  when ADDING we talk about TERMS:  2a +  4b = d
here 2a and 4b are the TERMS that you add together
-  when MULTIPLYING we talk about FACTORS:   6f x 7f = g
here 6f and 7f are the FACTORS that you multiply;
How?  This you'll learn in this paragraph!

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Slide 1: Slide
WiskundeMiddelbare schoolhavo, vwoLeerjaar 1

This lesson contains 29 slides, with interactive quizzes and text slides. Lesson duration is: 45 min

## Items in this lesson

§11.2 Multiplication
Ultra short RECAP:
-  when ADDING we talk about TERMS:  2a +  4b = d
here 2a and 4b are the TERMS that you add together
-  when MULTIPLYING we talk about FACTORS:   6f x 7f = g
here 6f and 7f are the FACTORS that you multiply;
How?  This you'll learn in this paragraph!

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0:25

#### Slide 3 -Slide

3 x 2 x 2 = 12   and  not  6!

#### Slide 4 -Slide

Open your Notebook and get a pen.
Make task 10 on the next slide.

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0:25

#### Slide 6 -Slide

Solution: length =   , width =    ,   Area = l x w, so:
Area of one tile is  =       x       =
k2
k
k
k
k

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0:30

SOLUTION:

#### Slide 9 -Slide

Make 10c in your Notebook now.
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1:00

SOLUTION:

6f x 5f = ...
A
30 f
B
11 f
C
11 f-squared
D
30 f-squared

#### Slide 16 -Quiz

Task: Try to find both formulas!
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0:45

#### Slide 17 -Slide

The areas are ...... and ......
A
7.5 p squared and 6 p squared
B
15 p squared. and 12 p squared
C
15 p squared and 6 p squared

#### Slide 18 -Quiz

SOLUTION:

6f x 5f =
30f2

#### Slide 19 -Slide

-6 p-squared x -4.1 p-squared = ....
A
24.6 p-squared
B
-24.6 p-squared
C
-10.1 p
D
-10.1 p-squared

#### Slide 20 -Quiz

SOLUTION
x                     =
6p2
4.1p2
24.6p2

#### Slide 21 -Slide

Solution: A:   l x w = Area, so 5p x 3p = 15
B:  A triangle is only half of a rectangle!  So we get:
3   x 4    x        =  6

21
p2
p2
p
p

#### Slide 22 -Slide

Next slide shows an exercise that we do together now.
1st   Open your Notebook and get a pen.
2nd Answer question a in your
Notebook.

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0:30

#### Slide 24 -Slide

What is the Volume in 13a?
A
3200
B
320
C
160
D
32

#### Slide 25 -Quiz

As you will know(?):
Volume = length x width x height
Therefore the Solution is:

#### Slide 26 -Slide

With 'this vase' the largest is meant.
The height is 20 cm. The value of s we don't know. It's just s!
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0:45

Solution:

#### Slide 28 -Slide

Homework time.
Do §11.2 Multiplication
+ you may skip   8 and 10

+ send in your pics with the corrected work in GC, as usual.