白粉笔有50盒，红粉笔有58盒，白粉笔比红粉笔少多少盒？.u+F6B'L'`'W9Z0s1H0N1V:m
算式：提示5O3m4E1v'w8z7S*W6y2Z.u+F6B'L'`'W9Z0s1H0N1V:m
答；白粉笔比红粉笔少*~.N;o6M+L6m8a6[2Q6x6|.]7a,K3p盒。.u+F6B'L'`'W9Z0s1H0N1V:m