Question

積的小數(shù)位數(shù)等于幾個(gè)因數(shù)中小數(shù)位數(shù)之積．

Answer 1

錯(cuò)誤
分析：小數(shù)乘法的計(jì)算方法：按照整數(shù)乘法的法則算出積，再看因數(shù)中一共有幾位小數(shù)，就從得數(shù)的右邊起數(shù)出幾位，點(diǎn)上小數(shù)點(diǎn)；得數(shù)的小數(shù)部分末尾有0，一般要把0去掉進(jìn)行化簡(jiǎn)；據(jù)此判斷得解．
解答：因?yàn)榉e的小數(shù)位數(shù)等于幾個(gè)因數(shù)中小數(shù)位數(shù)之和，
所以積的小數(shù)位數(shù)等于幾個(gè)因數(shù)中小數(shù)位數(shù)之積的說法是錯(cuò)誤的．
故答案為：×．
點(diǎn)評(píng)：此題考查小數(shù)乘法的計(jì)算方法的靈活運(yùn)用，要注意積的小數(shù)位數(shù)等于兩個(gè)因數(shù)的小數(shù)位數(shù)之和，而不是之積．