Doubles Inversés Flashcards by Laurence Witkowski

Q

18-9=

A

9

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Q

Quelle est la stratégie utilisée ici?

A

Ma stratégie est l’addition des doubles inversés
Ex: 8+ 8 = 16

Soustractions des doubles inversés: 16-8=8

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Q

16-8=

A

8

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Q

20-10=

A

10

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