Question

7．偶數(shù)+偶數(shù)=偶數(shù)  奇數(shù)+奇數(shù)=偶數(shù)   奇數(shù)+偶數(shù)=奇數(shù) 偶數(shù)×偶數(shù)=偶數(shù)  奇數(shù)×奇數(shù)=奇數(shù)   奇數(shù)×偶數(shù)=偶數(shù)．

Answer 1

分析 根據(jù)偶數(shù)與奇數(shù)的性質(zhì)：偶數(shù)±偶數(shù)=偶數(shù)，奇數(shù)±奇數(shù)=偶數(shù)，奇數(shù)±偶數(shù)=奇數(shù)，偶數(shù)×偶數(shù)=偶數(shù)，奇數(shù)×奇數(shù)=奇數(shù)，奇數(shù)×偶數(shù)=偶數(shù)，據(jù)此解答．

解答 解：偶數(shù)+偶數(shù)=偶數(shù)，奇數(shù)+奇數(shù)=偶數(shù)，奇數(shù)+偶數(shù)=奇數(shù)，偶數(shù)×偶數(shù)=偶數(shù)  奇數(shù)×奇數(shù)=奇數(shù)，奇數(shù)×偶數(shù)=偶數(shù)．
故答案為：偶數(shù)、偶數(shù)、奇數(shù)、偶數(shù)、奇數(shù)、偶數(shù)．

點評 此題考查的目的是理解掌握偶數(shù)與奇數(shù)的性質(zhì)及應(yīng)用．