9.3-0.98的简便计算?因为0.98=1-0.02,所以原式=9.3-(1-0.02)=9.3-1+0.02=8.32
9.3-0.98=9.3-1+0.02=8.3+0.02=8.32
9.3-0.989.3-(1-0.02)9.3-1+0.028.3+0.028.32
=9.3-1+0.02=8.3+0.02=8.32