222×444+888×889=?简算 333乘666+222=?简算十分钟急要~_数学解答

222×444+888×889=?简算 333乘666+222=?简算十分钟急要~

人气：484 ℃　时间：2020-05-06 17:48:23

解答

222×444 + 888×889
= 888×111 + 888×889
= 888×(111 + 889)
= 888×1000
= 888000
333×666 + 222
= 222×999 + 222
= 222×(999 + 1)
= 222×1000
= 222000