解:6.04+3.6+1.98 =9.40+2-0.02 =11.40-0.02 =11.38
6.04十3.6十1.98=9.64十2一0.02=11.62
=6.04+1.98+3.6=6.02+0.02+1.98+3.6=6.02+2+3.6=6.02+5.6=11.62
6.04+3.6+1.98简算方法=6+0.04+3.6+2-0.02=11.6+0.02=11.62