小數(shù)乘法除法整理和復(fù)習(xí)（一）

1、小數(shù)乘法和除法整理和復(fù)習(xí)（一）,1　口算搶答．,0.63 ÷9 ＝,3.5÷0.7＝,0.7×0.8＝,0.5＋0.14＝,3.4×2＝,6.3÷2.1＝,4×0.5＝,6.8÷1.7＝,0.56÷14＝,6.7＋3.3＝,0.32÷0.04＝,0.25÷0.05＝,2先說說積里有幾位小數(shù)，再計(jì)算。,1.3×3.8＝,2.9&#

2、215;0.82＝,0.072×0.15＝,怎樣計(jì)算小數(shù)乘法？,驗(yàn)算2.9×0.82,怎樣把除數(shù)是小數(shù)的除法轉(zhuǎn)化為除數(shù)是整數(shù)的除法？,3　計(jì)算下面各題．,2.04÷24＝,0.756÷0.18＝,0.256÷0.032＝,驗(yàn)算第3題,4算一算，比一比,8.6×7＝,8.6×0.7＝,0.86×0.7＝,11.7 ÷3.6 ＝,1.17 ÷

3、0.36 ＝,117 ÷36 ＝,求積的近似值與求商的近似值有什么異同？,5　用豎式計(jì)算下面各題，得數(shù)保留兩位小數(shù)。,0.17×2.45,7.3÷13,2.6×0.54,7.83÷2.8,6、小明家七月份用水13.6噸，八月份用水11.7噸，九月份用水12.4噸。平均每月用水多少噸？（先估計(jì)得數(shù)在什么范圍內(nèi)，再計(jì)算，得數(shù)保留一位小數(shù)）,7、做一種奶油蛋糕，每個(gè)要用7.5克奶油。50克奶油