Jeu 1 :

Mes solutions :

964 = 4+(25+5)×(25+8−1)
964 = 4×(8×(25+25/5)+1)
964 = 5×(25+8×(25−4))−1
964 = 4+25×8×(25−1)/5
964 = 4+8×5×(25−1)
964 = 4×(8×(25+5)+1)
964 = 4×((25+25)×5−(8+1))