编者寄语：查字典数学网小学频道为广大小朋友提供了多位数的三年级口算题：三位数加三位数的加法，希望对大家有所帮助!
(1)175 + 157 =
(2)645 + 239 =
(3)808 + 213 =
(4)256 + 775 =
(5)607 + 914 =
(6)352 + 708 =
(7)766 + 792 =
(8)970 + 602 =
(9)343 + 801 =
(10)916 + 861 =
(11)806 + 487 =
(12)691 + 400 =
(13)106 + 537 =
(14)353 + 939 =
(15)328 + 114 =