8 + 6 =
7 + 9 =
13 - 5 =
11 - 7 =
80 + 60 =
70 + 90 =
130 - 50 =
110 - 70 =
80 + 30 =
90 + 50 =
120 - 50 =
1200 - 500 =
60 + 90 =
900 + 500 =
160 - 80 =
180 - 50 =
50 + 70 =
600 + 600 =
100 - 20 =
150 - 80 =
60 + 30 + 50 =
60 + 30 + = 110
120 = 30 + + 80
20 + 40 + 80 =
+ 80 + 20 = 150
190 = 40 + 50 +
30 + 90 + 60 =
70 + + 60 = 130
180 = + 40 + 50
70 + 90 + 10 =
80 + 80 + = 175
170 = + 60 + 70
= 180 + 50
160 - 90 =
= 210 - 120
280 + 30 =
150 - = 80
= 870 - 550
400 + = 1100
1500 - 800 =
90 = 220 -
= ou ≠
100 - 42 =
200 - 12 =
+ 45 = 100
+ 696 = 700
100 64 + 46
= 100 - 91
153 = 200 -
28 + 72 100
29 + = 100
- 100 = 100
41 + 59 75 + 25
29 + = 200
400 - = 301
50 + 43 + 7 53 + 47 + 10
- 100 = 29
400 - 301 =
33 + 55 + 22 73 + 37
63 = 100 -
+ 991 = 1000
On possède :
On ajoute :
On obtient :
200 + 74 + = 300
91
100
98 + + 400 = 500
93
500
+ 100 + 3 = 200
82
600
800 + + 5 = 900
311
400
+ 194 + 7 = 300
809
900
550 + 201 + = 800
 
505 + 405 + = 1000