1.25×1.3的積是________位小數(shù),2.4÷0.06的首商在________位上.
3 十
分析:(1)依據(jù)積的小數(shù)位數(shù)等于因數(shù)小數(shù)位數(shù)的和即可解答,
(2)依據(jù)小數(shù)除法計算方法,把被除數(shù)與除數(shù)同時擴大100倍,再按照整數(shù)除法計算方法即可解答.
解答:(1)依據(jù)分析可得:1.25×1.3的積是3位小數(shù),
故答案為:3,
(2)2.4÷0.06,
=240÷6,
=40,
40的最高位是十位,
故答案為:十.
點評:本題主要考查學生知識點:(1)積的小數(shù)位數(shù)與因數(shù)位數(shù)的關系,(2)小數(shù)除法計算方法.