Question

0.21÷O．O25=

0.012÷0.25=

41.6÷2.6=

6.3÷0.42=

Answer 1

解：0.21÷0.025=8.4

0.012÷0.25=0.048

41.6÷2.6=16

6.3÷0.42=15

分析：本題根據(jù)小數(shù)除法的運算法則列豎式計算即可．
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．
點評：運用小數(shù)除法的計算法則進行計算，商的小數(shù)點與被除數(shù)的小數(shù)點對齊．