Question

偶數(shù)+偶數(shù)=

 

   奇數(shù)+奇數(shù)=

 

   偶數(shù)+奇數(shù)=

 

不計算，直接判斷下列算式的結(jié)果是奇數(shù)還是偶數(shù)，填在橫線上．
1428+205       65+285       365+447      100+232     454+222    15+488

 

 

 

 

 

 

546+258        223+3        1454+54      454+236     14+258     25+958

 

 

 

 

 

 

．

Answer 1

考點：奇數(shù)與偶數(shù)的初步認(rèn)識

專題：數(shù)的整除

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)．據(jù)此解答即可．

解答： 解：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)
1428+205，和是奇數(shù)；       65+285，和是偶數(shù)；      365+447，和是偶數(shù)；     100+232，和是偶數(shù)；    454+222，和是偶數(shù)；   15+488，和是奇數(shù)．
546+258，和是偶數(shù)；        223+3，和是偶數(shù)；     1454+54，和是偶數(shù)；      454+236，和是偶數(shù)；     14+258，和是偶數(shù)；     25+958，和是奇數(shù)．
故答案為：偶數(shù)，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)；偶數(shù)；偶數(shù)；偶數(shù)；偶數(shù)；奇數(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)．