2019秋五年級(jí)數(shù)學(xué)上冊(cè)第五單元小數(shù)的乘法和除法第19課時(shí)單元綜合復(fù)習(xí)教學(xué)課件蘇教版.pptx

1、單 元 復(fù) 習(xí),知識(shí)回顧,知識(shí)點(diǎn)1：小數(shù)乘整數(shù),4,4,.,1,0,8,0,.,知識(shí)回顧,用豎式計(jì)算。,0.689,540.41,2,1,.,6,4,5,6,1,2,4,1,2,2,.,6.12,22.14,知識(shí)點(diǎn)1：小數(shù)乘整數(shù),知識(shí)回顧,知識(shí)點(diǎn)2：一個(gè)小數(shù)乘以10、100、1000時(shí)，小數(shù)點(diǎn)的移動(dòng)規(guī)律,3.6810=,3.68100=,36.8,368,3.681000=,3680,知識(shí)回顧,填寫下表。,4,40,400,50.8,508,5080,0.09,0.9,9,360,3600,36000,知識(shí)點(diǎn)2：一個(gè)小數(shù)乘以10、100、1000時(shí)，小數(shù)點(diǎn)的移動(dòng)規(guī)律,知識(shí)回顧,知識(shí)點(diǎn)3：除數(shù)是

2、整數(shù)的小數(shù)除法,1,4,2,2,0,0,4,.,4,2,.,0,5,0,知識(shí)回顧,4.263,1,3,1,1,4,6,.,2,2,2,6,0,1.42,0.7357,0,7,1,.,3,0,0.105,5,5,3,5,0,知識(shí)點(diǎn)3：除數(shù)是整數(shù)的小數(shù)除法,知識(shí)回顧,知識(shí)點(diǎn)4：一個(gè)小數(shù)除以10、100、1000時(shí)，小數(shù)點(diǎn)的移動(dòng)規(guī)律,3.6810=,3.68100=,0.368,0.0368,3.681000=,0.00368,知識(shí)回顧,知識(shí)點(diǎn)4：一個(gè)小數(shù)除以10、100、1000時(shí)，小數(shù)點(diǎn)的移動(dòng)規(guī)律,直接寫出的數(shù)。,56.310,5.63,0.0310,0.003,16.5100,0.165,8.

3、4100,0.084,401000,0.04,28.91000,0.0289,知識(shí)回顧,知識(shí)點(diǎn)5：小數(shù)乘小數(shù),知識(shí)回顧,知識(shí)點(diǎn)5：小數(shù)乘小數(shù),1.020.76,0.7752,0.322.05,0.656,2,1,6,4,1,2,5,7,.,7,0,7,0,1,4,5,1,0,6,5,.,6,0,6,知識(shí)回顧,知識(shí)點(diǎn)6：一個(gè)數(shù)除以小數(shù),.,7,9,4,1,4,.,2,4,1,0,知識(shí)回顧,知識(shí)點(diǎn)6：一個(gè)數(shù)除以小數(shù),0,1,5,9,0,.,.,6,.,0,.,3,8,6,2,8,8,2,0,6,1,0,5,0,9,0,.,1,6,6,6,9,0,0,6,.,0,知識(shí)回顧,知識(shí)點(diǎn)7：商的近似值,按“四舍五入”法求出商的近似值，填在下表里。,1.5,1.49,1.488,8.5,8.48,8.478,知識(shí)回顧,知識(shí)點(diǎn)7：商的近似值,超市將468千克蘋果分裝到紙箱里保存，每個(gè)紙箱可裝25千克，需要多少個(gè)紙箱？,4682519（個(gè)）,答：需要19個(gè)紙箱,知識(shí)回顧,知識(shí)點(diǎn)8：小數(shù)的四則混合運(yùn)算,0.830.254,0.83（0.254）,0.83,知識(shí)回顧,先說說各題的運(yùn)算順序，再計(jì)算。,2.551.70.59,1.50