0.75+1.39+0.25 =(0.75+0.25)+1.39 =1+1.39 =2.39 5.29+4.7+0.3 =5.29+(4.7+0.3) =5.29+5 =10.29 0.46+3.8+9.54 =(0.46+9.54)+3.8 =10+3.8 =13.8 1.93+5.6+4.07 =(1.93+4.07)+5.6 =6+5.6 =11.6 0.67+2.5+7.5 =0.67+(2.5+7.5) =0.67+10 =10.67 2.39+1.45+7.61 =(2.39+7.61)+1.45 =10+1.45 =11.45
