Ivan Shishkin, Rye (1878)

Problems/Number theoryExerciseUnreviewed

Une addition et une soustraction

by Ancient Tree·
2
Difficulty scaleÉchelle de difficulté

This score reflects both the level of the required concepts and the difficulty of the solution.Ce score tient compte à la fois du niveau des notions nécessaires et de la difficulté de la résolution.

  1. 1–10First steps / middle schoolPremiers pas / collège
  2. 11–25Beginner / high schoolDébutant / lycée
  3. 26–50Intermediate / undergraduateIntermédiaire / licence
  4. 51–70Advanced / graduateAvancé / master
  5. 71–90Expert / specializedExpert / spécialisé
  6. 91–100Research levelNiveau recherche
These levels are approximate guides.Ces niveaux sont des repères approximatifs.
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Calculer :
10+6−2.10+6-2.

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Solution by Ancient Tree

Discussions0 useful votes

On peut commencer par l’addition :
10+6−2=16−2=14.10+6-2=16-2=14.Ou bien on peut commencer par la soustraction :
10+6−2=10+4=14.10+6-2=10+4=14.On obtient bien le même résultat dans les deux cas !

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