Question

【題目】兩個偶數(shù)相加，和一定是 數(shù)；偶數(shù)和奇數(shù)相加的和是 數(shù)；偶數(shù)乘以奇數(shù)的積是 數(shù)；偶數(shù)乘以偶數(shù)的積是 數(shù)奇數(shù)乘以奇數(shù)的積是 數(shù)．

Answer 1

【答案】偶、奇、偶、偶、奇．

【解析】

試題分析：奇數(shù)和偶數(shù)的性質(zhì)可知：奇數(shù)+奇數(shù)=偶數(shù)，奇數(shù)﹣奇數(shù)=偶數(shù)、奇數(shù)+偶數(shù)=奇數(shù)，奇數(shù)﹣偶數(shù)=奇數(shù)、奇數(shù)×奇數(shù)=奇數(shù)，奇數(shù)×偶數(shù)=偶數(shù)，偶數(shù)×偶數(shù)=偶數(shù)，據(jù)此解答即可．

解：由分析可知：兩個偶數(shù)相加，和一定是偶數(shù)；

偶數(shù)和奇數(shù)相加的和是奇數(shù)；

偶數(shù)乘以奇數(shù)的積是偶數(shù)；

偶數(shù)乘以偶數(shù)的積是偶數(shù)；

奇數(shù)乘以奇數(shù)的積是奇數(shù)．

故答案為：偶、奇、偶、偶、奇．