計算2.025÷1.47時,先將1.47的小數(shù)點向________移動________位,使它________,再將除數(shù)2.205的小數(shù)點向________移動________位,最后按除數(shù)是整數(shù)的除法進行計算.
右 2 變成整數(shù) 右 2
分析:本題根據(jù)除數(shù)是小數(shù)的小數(shù)除法的運算法則分析填空即可,除數(shù)是小數(shù)的小數(shù)除法法則:先看除數(shù)中有幾位小數(shù),就將除數(shù)的小數(shù)點向右移動幾位,將除數(shù)化成整數(shù),然后再把被除數(shù)的小數(shù)點向右移動幾位,數(shù)位不夠的用零補足; 然后按照除數(shù)是整數(shù)的小數(shù)除法來除.
解答:根據(jù)除數(shù)是小數(shù)的小數(shù)除法的運算法則可知,
計算2.025÷1.47時,先將1.47的小數(shù)點向右移動2位,使它變成整數(shù),
再將除數(shù)2.025的小數(shù)點也向右移動2位,最后按除數(shù)是整數(shù)的除法進行計算.
故答案為:右,2,變成整數(shù),右,2.
點評:本題通過具體算式考查了學生對除數(shù)是小數(shù)的小數(shù)除法的運算法則的理解與應用.