計算3.105÷1.25時,先將除數(shù)1.25的小數(shù)點向________移動________位,使它變成________;再將被除數(shù)3.105的小數(shù)點也向________移動________位,變成除數(shù)是________的除法,這樣就可以按________除法的法則進(jìn)行計算了.
右 2 125 右 2 整數(shù) 整數(shù)
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.
解答:計算3.105÷1.25時,先將除數(shù)1.25的小數(shù)點向右移動 2位,使它變成125;
再將被除數(shù)3.105的小數(shù)點也向右移動2位,變成除數(shù)是整數(shù)的除法,這樣就可以按整數(shù)除法的法則進(jìn)行計算了.
故答案為:右,2,125,右,2,整數(shù),整數(shù).
點評: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),就將小數(shù)點向右移動幾位,將除數(shù)變成小數(shù),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;(2)然后按照除數(shù)是整數(shù)的小數(shù)除法來除.