Question

19．在橫線上填上“奇數(shù)”或“偶數(shù)”．

奇數(shù)+奇數(shù)=偶數(shù)	偶數(shù)-偶數(shù)=偶數(shù)	奇數(shù)+偶數(shù)=奇數(shù)
偶數(shù)-奇數(shù)=奇數(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)，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)，奇數(shù)×偶數(shù)=偶數(shù)．據(jù)此解答即可．

解答 解：

奇數(shù)+奇數(shù)=偶數(shù)	偶數(shù)-偶數(shù)=偶數(shù)	奇數(shù)+偶數(shù)=奇數(shù)
偶數(shù)-奇數(shù)=奇數(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)、奇數(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)