1. Quelle est la règle correcte pour le signe du produit de deux nombres ?
2. Quelle formule correspond à la relation du théorème de Pythagore pour un triangle rectangle?
3. Comment calcule-t-on la somme de deux fractions ?
Règles de signes
+ + = +, – – = +, + – = –
Règles des signes — + et –?
+ = +, – – = +, + – = –, – + = –
Opérations sur fractions
Addition, soustraction, multiplication, division
Opérations sur fractions — opérations?
Addition, soustraction, multiplication, division
Puissances — notation ?
a^n, notation scientifique : N = a × 10^n
Notations puissances — a^n?
Puissance de base a,exposant n
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