(1)75+360÷20+48, =75+18+48, =93+48, =141; (2)125×39×8×2, =(125×8)×(39×2), =1000×78, =78000; (3)37×28+28×63, =(37+63)×28, =100×28, =2800; (4)9.26-1.36-0.26-3.64, =(9.26-0.26)-(1.36+3.64), =9-5, =4; (5)58×99+58, =58×(99+1), =58×100, =5800; (6)5.76-(3.76+1.8), =5.76-3.76-1.8, =2-1.8, =0.2. |