the magic of subtraction 2009 quinín freire 1 learning
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TRANSCRIPT
THE MAGIC OF
SUBTRACTION
2009 Quinín Freire
1
LEARNING
Solvethe
equations
1Click on the right
answer
2413-
11 12 21
correct !
Try
again
2Click on the right
answer
5331-
22 12 21
very good!
Tryagain
3Click on the right
answer
2720-
17 47 7
good job!
Try
again
4Click on the right
answer
5632-
84 24 14
well done!
Tryagain
5Click on the right
answer
2611-
37 15 25
right !
Try
again
6Click on the right
answer
4937-
13 22 12
great !
Tryagain
7Click on the right
answer
3522-
57 23 13
fantastic !
Try
again
8Click on the right
answer
7715-
62 72 52
terrific !
Try
again
9Click on the right
answer
6824-
14 44 34
way to go !
Tryagain
10
Click on the right answer
7914-
65 55 75
super !
Try
again
11
Click on the right answer
3423-
12 21 11
correct !
Tryagain
12
Click on the right answer
6320-
53 83 43
very good !
Try
again
13
Click on the right answer
5521-
24 34 44
good job!
Tryagain
14
Click on the right answer
7611-
85 65 75
well done !
Tryagain
15
Click on the right answer
4744-
91 13 3
right !
Tryagain
16
Click on the right answer
5721-
36 26 78
great !
Try
again
17
Click on the right answer
5433-
21 87 11
fantastic !
Try
again
18
Click on the right answer
5551-
106 4 14
terrific !
Try
again
19
Click on the right answer
5830-
18 82 28
way to go !
Try
again
20
Click on the right answer
4826-
12 22 32
you´re done!
Try
again
The end2009 Quinín
Freire
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