解:(1)
=13;
=1.3;
=0.13;
規(guī)律:把一個(gè)數(shù)的小數(shù)點(diǎn)向左(右)移動(dòng)二位,這個(gè)數(shù)算術(shù)平方根的小數(shù)點(diǎn)向左(右)移動(dòng)一位.
(2)
=13;
=1.3;
=0.13;
規(guī)律:把一個(gè)數(shù)的小數(shù)點(diǎn)向左(右)移動(dòng)三位,這個(gè)數(shù)立方根的小數(shù)點(diǎn)向左(右)移動(dòng)一位.
故答案為:13,1.3,0.13,左(右),一;13,1.3,0.13,左(右),一.
分析:首先利用計(jì)算器進(jìn)行正確的計(jì)算,然后根據(jù)計(jì)算的結(jié)果發(fā)現(xiàn)小數(shù)點(diǎn)的移動(dòng)規(guī)律即可.
點(diǎn)評(píng):本題考查了計(jì)算器的正確使用,解題的關(guān)鍵是熟悉計(jì)算器,并正確的計(jì)算,當(dāng)計(jì)算出正確的結(jié)果后,發(fā)現(xiàn)規(guī)律不再是難點(diǎn).