小數(shù)加減法練習(xí)題

1、姓名：小數(shù)加減法練習(xí)題小數(shù)加減法練習(xí)題小數(shù)加減法注意事項(xiàng)：小數(shù)點(diǎn)要上下對(duì)齊，小數(shù)加減法注意事項(xiàng)：小數(shù)點(diǎn)要上下對(duì)齊，小數(shù)點(diǎn)對(duì)齊后，小數(shù)的整數(shù)部分和小數(shù)點(diǎn)小數(shù)點(diǎn)對(duì)齊后，小數(shù)的整數(shù)部分和小數(shù)點(diǎn)后面的各分位數(shù)也自動(dòng)對(duì)齊了。后面的各分位數(shù)也自動(dòng)對(duì)齊了。（注意書(shū)寫(xiě)（注意書(shū)寫(xiě)整潔）整潔）一、一、1、口算。、口算。0.70.7＋0.9=0.9=0.80.8＋0.6=0.6=8.248.24＋3.76=3.76=4.14.1－3.8=3.8=1414＋0

2、.78=0.78=14.614.6－0.34=0.34=1.31.3＋8.56=8.56=0.80.8－0.55=0.55=4－0.04=0.04=1－0.03=0.03=30.530.5＋3.05=3.05=0.80.8－0.45=0.45=0.780.78＋2.2=2.2=5－0.08=0.08=3.253.25＋0.75=0.75=1010－0.1=0.1=1.51.5－0.50.5＝1－0.90.9＝2.32.3＋0.60.6＝

3、0.90.9＋0.80.8＝1.91.9－0.9=0.9=3.53.52.4=2.4=0.360.36＋0.640.64＝0.960.96－0.30.33.53.54.2=4.2=60.5=0.5=2.70.4=2.70.4=10.3=10.3=0.80.80.7=0.7=4.53=4.53=姓名：3、脫式計(jì)算，能簡(jiǎn)便的要簡(jiǎn)便簡(jiǎn)便計(jì)算。、脫式計(jì)算，能簡(jiǎn)便的要簡(jiǎn)便簡(jiǎn)便計(jì)算。（注意書(shū)寫(xiě)整潔）（注意書(shū)寫(xiě)整潔）45.5545.55（6.826.

4、82＋15.5515.55）34.5234.52－17.8717.87－12.2312.234.73.173.435.834.73.173.435.8323.7523.75－8.648.64－3.363.3617.8317.83－9.59.5－7.837.83－0.50.53.453.45＋8.78.7＋16.5516.55＋1.31.327.3827.38－5.345.34＋2.622.62－4.664.6621.6321.63－（－

5、（8.58.5＋9.639.63）4.324.32－（－（1.261.26＋2.342.34）2.52.5＋3.253.25＋0.750.75＋7.57.5四、應(yīng)用題四、應(yīng)用題1.1.水果店第一天賣(mài)出水果水果店第一天賣(mài)出水果4550045500克，第二天克，第二天比第一天少賣(mài)出比第一天少賣(mài)出1515千克，第三天比第二千克，第三天比第二天多賣(mài)出多賣(mài)出21.521.5千克。三天共賣(mài)出水果多少千克。三天共賣(mài)出水果多少千克2.2.新華印刷廠(chǎng)計(jì)劃