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共3个回答
热心网友
568+47-39x15简便计算为:
=568+47+15-40x15
=615+15-600
=630-600
=30
热心网友
568+47-39x15简便计算为:
=568+47+15-40x15
=615+15-600
=630-600
=30
热心网友
根据题意列式:568+47-39×15
解:568+47-39×15
=615-(40-1)×15
=615-600+15
=30
热心网友
568+47-39x15
=615-39x15
=615-(40-(1))x15
=615+15-600
=(615-600)+15
=15+15
=30
热心网友
568+47-39x15简便计算为:
=568+47+15-40x15
=615+15-600
=630-600
=30
热心网友
根据题意列式:568+47-39×15
解:568+47-39×15
=615-(40-1)×15
=615-600+15
=30
热心网友
568+47-39x15
=615-39x15
=615-(40-(1))x15
=615+15-600
=(615-600)+15
=15+15
=30
热心网友
根据题意列式:568+47-39×15
解:568+47-39×15
=615-(40-1)×15
=615-600+15
=30
热心网友
568+47-39x15
=615-39x15
=615-(40-(1))x15
=615+15-600
=(615-600)+15
=15+15
=30
热心网友
568+47-39x15简便计算为:
=568+47+15-40x15
=615+15-600
=630-600
=30
热心网友
根据题意列式:568+47-39×15
解:568+47-39×15
=615-(40-1)×15
=615-600+15
=30
热心网友
568+47-39x15
=615-39x15
=615-(40-(1))x15
=615+15-600
=(615-600)+15
=15+15
=30
热心网友
568+47-39x15简便计算为:
=568+47+15-40x15
=615+15-600
=630-600
=30
热心网友
根据题意列式:568+47-39×15
解:568+47-39×15
=615-(40-1)×15
=615-600+15
=30
热心网友
568+47-39x15简便计算为:
=568+47+15-40x15
=615+15-600
=630-600
=30
热心网友
根据题意列式:568+47-39×15
解:568+47-39×15
=615-(40-1)×15
=615-600+15
=30
热心网友
568+47-39x15
=615-39x15
=615-(40-(1))x15
=615+15-600
=(615-600)+15
=15+15
=30
热心网友
568+47-39x15
=615-39x15
=615-(40-(1))x15
=615+15-600
=(615-600)+15
=15+15
=30