怎样简算567+558+562+555+563

问题描述:

怎样简算567+558+562+555+563

=(567+563)+(558+562)+555
=1130+1120+555
=2250+555
=2805

原式=(567+563)+(558+562)+555
=1130+1120+555
=2250+555
=2805

(567+563)+(558+562)+555

567+558+562+555+563
=560×5+(7-2+2-5+3)
=2800+5
=2805

567+558+562+555+563
=560+7+560-2+560+2+560-5+560+3
=560×5+(7-2+2-5+3)
=2800+5
=2805