(1)因为1 3 8 =1.375,183.2%=1.832,且1.375<1.83<1.832<1.86,所以1 3 8 <1.83<183.2%<1.86.(2)因为33.3%=0.333, 1 3 =0. ? 3 ,且0.333<0. ? 3 <0.334<0.34,所以33.3%< 1 3 <0.334<0.34.