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Times tables strategies - using what we know.
Times tables strategies
Using what we know
1 / 32
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Slide 1:
Tekstslide
Mathematics
Lower Secondary (Key Stage 3)
In deze les zitten
32 slides
, met
interactieve quizzen
,
tekstslides
en
1 video
.
Lesduur is:
30 min
Start les
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Onderdelen in deze les
Times tables strategies
Using what we know
Slide 1 - Tekstslide
What you need to know?
Halving and doubling numbers up to 20.
Number bonds to 10
The 1s, 2s, 5s, and 10 times tables
How to decompose a number e.g. How can we make 7 (using 1, 2, 5 or 10)?
5 + 2 makes 7
How can we make 8 (using 1, 2, 5 or 10)?
10-2 makes 8?
How can we make 6 (using 1, 2, 5 or 10)?
5+1 makes 6.
Slide 2 - Tekstslide
Make 3
Slide 3 - Open vraag
3 x 8
Let's make this easier ...
2 x 8 =
16
1 x 8 = 8
8 +16 = 24
Slide 4 - Tekstslide
7 x 3
7 x 2 = 14
7 = 5 +2
Double 5 is 10
Double 2 is 4
So 7 x 2 = 14
7 x 1 = 7
14 + 7 = 21
Slide 5 - Tekstslide
Make 4
Slide 6 - Open vraag
6 x 4
6 x 2 = 12
Double 12
Double 10 is 20
Double 2 is 4
Double 12 is 24
or 6 x 5 = 30
6 x 1 = 6
30-6 = 24
Slide 7 - Tekstslide
4 x 4
4 x 2 = 8
Double 8 = 16
Or
4 x 5 = 20
4 x 1 = 4
20 -4 = 16
Slide 8 - Tekstslide
4 x 3
Slide 9 - Open vraag
Make 6
Slide 10 - Open vraag
6 x 7
Slide 11 - Open vraag
Make 7
Slide 12 - Open vraag
6 x 7
6 x 5 = 30
6 x 2 = 12
6 x 7 = 42
Slide 13 - Tekstslide
7 x 8
7 x 8 is the same as 8 x 7
8 x7 is the same as 8 x 5 + 8 x 2
8 x 5 = 40
8 x 2 = 16
40 + 16 is 56
Slide 14 - Tekstslide
7 x 8
Slide 15 - Open vraag
Make 8
Slide 16 - Open vraag
6 x 8
6 x 10 = 60
6 x 2 = 12
60-12 = 48
Slide 17 - Tekstslide
8 x 9
Slide 18 - Open vraag
Make 9
Slide 19 - Open vraag
9 x 9
Slide 20 - Open vraag
6 x 4
A
30
B
24
Slide 21 - Quizvraag
7 x 3
A
21
B
14
Slide 22 - Quizvraag
4 x 4
A
20
B
16
Slide 23 - Quizvraag
6 x 8
A
60
B
48
Slide 24 - Quizvraag
6 x 7
A
42
B
30
Slide 25 - Quizvraag
7 x 8
A
56
B
40
Slide 26 - Quizvraag
6 x 9
6 x 10 = 60
6 x 1 = 6
60 – 6 = 54
Use hands for 9 x tables
Slide 27 - Tekstslide
Slide 28 - Video
9 x 2
A
9
B
18
Slide 29 - Quizvraag
9 x 10
A
81
B
90
Slide 30 - Quizvraag
9 x 5
A
36
B
45
Slide 31 - Quizvraag
9 x 4
A
36
B
45
Slide 32 - Quizvraag