Opérations sur les décimaux
Presentation
•
Mathematics
•
7th Grade
•
Hard
Christelle Cos
Used 6+ times
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10 Slides • 0 Questions
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by Christelle Cos
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Les opérations avec les nombres décimaux fonctionnent de la même manière qu'avec les entiers. Il faut juste bien positionner la virgule.
Rappel:
Lorsqu'on multiplie une valeur par 1 le résultat est inchangé:
1,1 x 1 = 1,1
Si on multiplie par des valeurs 10 fois plus petites que l'unité on déplace la virgule vers la droite:
5 x 0.1 = 0,5 5 x 0,01 = 0,05
0,5 x 0,1 = 0,05 5 x 0,001 = 0,005
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252,8 |32
-224↓ 7,9
0288
- 288
000
by Christelle Cos
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