1块橡皮1元钱，3块橡皮多少元钱？.P3['N5y/e'J2H
算式：提示,Q0y,|3c.{.C0H2X(D2^.P3['N5y/e'J2H
口答：3块橡皮'I-R7x-f:]4I:e5M'V7s/n,M.u元钱。.P3['N5y/e'J2H