%@P:exocorcp %@Dif:3 Effectue les multiplications suivantes : \[\Eqalign{ &3,15\times3,8\kern1cm&&4,57\times8,71\kern1cm&&34,7\times0,12\kern1cm&&45,17\times3,1\kern1cm&&0,299\times3,4\cr &3,14\times3,14&&31,1\times1,13&&4,1\times3,9&&2,15\times4,87\cr } \] %@Correction: \opmul{3,15}{3,8}\hfill\opmul{4,57}{8,71}\hfill\opmul{34,7}{0,12}\hfill\opmul{45,17}{3,1}\hfill\opmul{0,299}{3,4}\hfill\opmul{3,14}{3,14} \par\vspace{1cm}\par \opmul{31,1}{1,13}\hfill\opmul{4,1}{3,9}\hfill\opmul{2,15}{4,87}