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Marylou11
@Marylou11
April 2019
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Bonjour j'ai deux exercices que je n'arrive pas a resoudre : En observ
bonjour j'ai deux exercices que je n'arrive pas a resoudre :
En observant les quatres calculs ci-dessous , qui sont corrects , énonce la règle de priorité :
- 15-2x3=9 27+35diviser 5 = 34
-7x8+10=66 60-2+4=57
2- calcule : 9-9x0.5 Puis : 9x7 - 8 diviser 4
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Va2L
Sur le 1er, c'est -15 ou 15 ? Ca devrait etre 15 normalement..
La règle est: La multiplication et la division sont prioritaires à l'addition et la soustraction.
2. 9-9x0.5= 9-4.5 = 4.5
9x7-8/4 = 63 - 2 = 61
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La règle est: La multiplication et la division sont prioritaires à l'addition et la soustraction.
2. 9-9x0.5= 9-4.5 = 4.5
9x7-8/4 = 63 - 2 = 61