Bonjour ceci est pour demain c'est super important:
Calculer 1-2+3-4+5-6+...+99-100

By: USER7454
26 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
Bonjour ceci est pour demain c'est super important:
Calculer 1-2+3-4+5-6+...+99-100
Asked by:
95 Viewed 95 Answers

Answer (95)

Best Answer
(440)

Réponse :

Explications étape par étape

Bjr,

-2+1 =- 1

-4+3 =- 1

-6+5 =- 1

-8+7 =-1

....

-100+99 =- 1

=>

- 1*50 = - 50

☺

J'ai oublié le signe négatif en route, je l'ai rajouté.

Answered on 26 Agustus 2025
(161)

Réponse :1-2=-1,2-3=-1,3-4=-1... chaque fois les soustraction donne -1 il suffit donc de faire -1×50 =-50

Explications étape par étape

Answered on 26 Agustus 2025

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