Question

【題目】直接寫得數(shù)．

12.6﹣9= 13+6.7= 10﹣3.2= 0.06×0.7=

3.28÷4= 3.3×4×0= 100÷40= 0.05×1.6=

Answer 1

【答案】3.6,19.7,6.8,0.042,0.82,0,2.5,0.08

【解析】

試題分析：本題要運(yùn)用到小數(shù)的加減乘除法的計(jì)算法則，小數(shù)的加減小數(shù)點(diǎn)要對(duì)齊，，一個(gè)數(shù)同0相乘仍的0，小數(shù)乘以小數(shù)積的小數(shù)位數(shù)就是兩個(gè)因數(shù)的小數(shù)位數(shù)的和．

解：12.6﹣9=3.6，13+6.7=19.7，10﹣3.2=6.8，0.06×0.7=0.042，

3.28÷4=0.82，3.3×4×0=0，100÷40=2.5，0.05×1.6=0.08；