简算4.2-25*0.7÷5 4.7*2.34-0.34*4.7 28.7*[0.54÷(8.7+45.3)]
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![简算4.2-25*0.7÷5 4.7*2.34-0.34*4.7 28.7*[0.54÷(8.7+45.3)]](/uploads/image/z/34236-36-6.jpg?t=%E7%AE%80%E7%AE%974.2-25%2A0.7%C3%B75+4.7%2A2.34-0.34%2A4.7+28.7%2A%5B0.54%C3%B7%EF%BC%888.7%2B45.3%EF%BC%89%5D)
简算4.2-25*0.7÷5 4.7*2.34-0.34*4.7 28.7*[0.54÷(8.7+45.3)]
简算4.2-25*0.7÷5 4.7*2.34-0.34*4.7 28.7*[0.54÷(8.7+45.3)]
简算4.2-25*0.7÷5 4.7*2.34-0.34*4.7 28.7*[0.54÷(8.7+45.3)]
4.2-25*0.7÷5
=4.2-5*0.7
=4.2-3.5
=0.7
4.7*2.34-0.34*4.7
=4.7*(2.34-0.34)
=4.7*2
=9.4
28.7*[0.54÷(8.7+45.3)]
=28.7*[0.54÷54]
=28.7*0.01
=0.287
简算4.2-25*0.7÷5 4.7*2.34-0.34*4.7 28.7*[0.54÷(8.7+45.3)]
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