脱式计算. (1)5.4×5.08+3.6×5.08+5.08 (2)0.25×588.5×400 -1.9]÷0.125 × 0.8-1] ×0.4 (5) (6)
脱式计算。 | ||||||
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(1)5.4×5.08+3.6×5.08+5.08 | (2)0.25×588.5×400 =0.25×400×588.5 =100×588.5 =58850 |
(3)[9-(4.68+ 1.42)-1.9]÷0.125 =[9-6.1-1.9]÷0.125 =1÷0.125 =8 | (4)[(6.1 - 4.6)× 0.8-1] ×0.4 |
(5)![]() =4.125+0+4.125 =8.25 | (6) |

