5ème soutien N°21 addition et soustraction de nomlbres relatifs
EXERCICE 3 : (?20) ? (+34) = (?20) + (?34) = ?54. (?22) ? (?53) = (?22) + (+53) = +31. (+565) ? (?125) = (+565) + (+125) = + 690. (+200) ? (+220) = (+200) + ...
moved 95455
moved 10350
moved 30098
moved 68867
moved 23554
moved 94950