Page 80 - arithmetique

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Tables d’addition.

24-1=3 3+1=4 4+1=5
24-2=4 3+2=5 4+2=6
24-3=5 3+3=6 4+3=7
24-4=6 3+4=7 4+4=8
2+5=7 3+5=8 4+5=9
2+6=8 3+6=9 4 + 6 = 10
2+7=9 3 + 7 = 10 4 + 7 = 11
2 + 8 = 10 3 + 8 = 11 4 + 8 = 12
2 + 9 = 11 3 + 9 = 12 4 + 9 = 13
2+10 = 12 3 + 10 = 13 4 + 10 = 14

5+1=6 6+1=7 7+1=8
7-j-2=9
5+2=7 6+2=8
5+3=8 6 4-3=9 7 + 3=10
5+4=9 6 + 4 = 10 7 + 4 = 11
5 + 5 = 10 6 + 5 = 11 7 + 5 = 12
5 + 6 = 11 6 + 6 = 12 7 + 6 = 13
5 + 7 = 12 6 + 7 = 13 7 + 7 = 14
5 + 8 = 13 6 + 8 = 14 7 + 8 = 15
5 + 9 = 14 6 + 9 = 15 7 + 9 = 16
5 + 10 = 15 6 + 10 = 16 7 + 10 = 17

8+1=9 9 + 1=10 • Je peux changer l’or-
8 + 2 = 10 9 + 2 = 11 dre des nombres :
8 + 3 = 11 9 + 3 = 12 Ex. : 2+1=3
8 + 4 = 12 9 + 4 = 13 ou 1+2 = 3.
8 + 5 = 13 9 + 5 = 14
• Je peux écrire les
8 + 6 = 14 9 + 6 = 15
8 + 7 = 15 9 + 7 = 16 tables sous forme de
8 + 8 = 16 9 + 8 = 17 soustraction.
8 + 9 = 17 9 + 9 = 18 Ex. : 3-1=2
8 + 10 = 18 9 + 10 = 19 3-2=1.