ddien vao cho cham
(267kg+158kg)x12=................kg=..................tấn=.................kg
(40293kg-10203kg):15=..........kg=...................tấn=................kg
(132kgx54):36=.........................kg=......................tạ=...........................kg
(3888kg:12)x25=.............kg=..................tấn=.............tạ
