,请归纳出“小数加减法的计算方法”。,5010,5个百1个百等于6个百,5个0.11个0.1等于6个0.1,5个十1个十等于6个十,0.50.1,500100,600,60,0.6,5个1个6个,0.050.01,0.06,5个0.011个0.01等于6个0.01,0.50.010.6 ?,0.15+0.23,0.38+0.2,0.6+4,8.2 - 2,口算:,1.5+0.23,8.2 0.2,0.38+0.02,0.6+0.4,=0.38,=1.73,=6.2,=8,=0.58,=0.4,=4.6,=1,列竖式计算2.180.52 5. 75+1.117. 46. 2 3 50.41,12.5元,23.2元,6.8元,7.5元,回顾与整理: 想一想,自己在这节课的学习中,有哪些收获?有哪些不足?你如何评价其他同学在这节课中的表现?,家庭作业:,必做题:数学作业本P42,选做题:(1)在里填数字。,(2)调查一下你家上季度各个月付出的电费和水费,填入下表。,