Question

0.84×0.26的積有（　　）小數(shù)．

A．一位

B．二位

C．三位

D．四位

Answer 1

分析：根據(jù)小數(shù)乘法的計(jì)算法則可知，積的小數(shù)位數(shù)等于兩個(gè)因數(shù)小數(shù)位數(shù)之和．據(jù)此解答．

解答：解：0.84是兩位小數(shù)，0.26是兩位小數(shù)，所以0.84×0.26積的小數(shù)位數(shù)有：2+2=4位；
故選：D．

點(diǎn)評(píng)：此題據(jù)此關(guān)鍵是明確：積的小數(shù)位數(shù)等于兩個(gè)因數(shù)小數(shù)位數(shù)之和．