(1)原式=4+(-8)×5-(-0.28)÷4
=4-40-(-0.07)
=-36+0.07
=-35.93
(2)原式=[(-27)-(-125)]÷2
=98÷2
=49
(3)原式=-8×1/4-3×25-25/36×6
=-2-75-25/6
=-77-25/6
=-487/6
=4-40-(-0.07)
=-36+0.07
=-35.93
(2)原式=[(-27)-(-125)]÷2
=98÷2
=49
(3)原式=-8×1/4-3×25-25/36×6
=-2-75-25/6
=-77-25/6
=-487/6
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