工人一共要运58根木头,第一次运了20根,第二次运了22根,还要运多少根才能运完?/j5y1F'c5X8a3L9q
算式:提示)k4Y)Y:N+N(@/j5y1F'c5X8a3L9q
答:还要运)F'v1t4F0x7K6Q根才能运完。/j5y1F'c5X8a3L9q