Addition

par  professeur de Mathématiques 1

Complétez :

A = (+9) + (–19) = ... B = (–9) + (–19) = ...
C = (+19) + (–9) = ... D = (+19,1) + (+1,9) = ...
E = (–8,6) + (+6,8) = ... F = (+12,345) + (–13,245) = ...

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Solution par Liza W.

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