脱式计算,能简算的要简算。 (1)(50-40×1.2)÷0.5 (2)8×4×125×25 (3

2025-02-22 12:26:31
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回答1:

(1)原式=(50-48)÷0.5
                =2÷0.5
                =4
(2)原式=(8×125)×(4×25)
                =1000×100
                =100000
(3)原式=(18.8-3.8)-( +
                =15-1
                =14
(4)原式=32×(71.1+28.9)
                =32×100
                =3200