(1)
Repeat addition and
subtraction
Widerholte Addition und
Subtraktion
Addition et soustraction
successives
Repetición de suma y
restas
Addizioni e sottrazioni
ripetute
Repeterad addition och
subtraktion
Herhaald optellen en
aftrekken
=
×
2
A
A
A
=
×
×
3
A
A
A
A
1
A
(2)
+
+
+
12
12
12
−
−
=
45
10
10
×
×
=
12
45
78
÷
÷
=
840
4
15
=
×
=
2
2
2
2
=
×
×
=
3
2
2
2
2
1
7
(3)
(4)
(5)
(6)
•
K
0
•
•
0
•
•
F
•
•
0
•
K
0
•
•
F
(7)
12
45
10
12
45
78
840
4
150
2
2
7
0.14285714285
(8)
61.
42'120.
14.
4.
8.
