小数加减法的简便计算(共13页).doc

12.635.954.057.37 15.694.885.12 12.95+3.84+6.16 29.88-13.33-6.6742.81+27.45-12.81+22.55 82.36-（5.87+22.36）1998+199.8+19.98+1.998+2.22212.635.954.057.37 15.694.885.12 12.95+3.84+6.16 29.88-13.33-6.6742.81+27.45-12.81+22.55 82.36-（5.87+22.36）1998+199.8+19.98+1.998+2.222竖式计算8.05-2.97 10-5.