用递等式计算2.98+6.5×(3.2-3.12) [(6.1-4.6)+0.8]×0.4
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![用递等式计算2.98+6.5×(3.2-3.12) [(6.1-4.6)+0.8]×0.4](/uploads/image/z/757655-71-5.jpg?t=%E7%94%A8%E9%80%92%E7%AD%89%E5%BC%8F%E8%AE%A1%E7%AE%972.98%2B6.5%C3%97%EF%BC%883.2-3.12%EF%BC%89+%5B%286.1-4.6%EF%BC%89%2B0.8%5D%C3%970.4)
用递等式计算2.98+6.5×(3.2-3.12) [(6.1-4.6)+0.8]×0.4
用递等式计算2.98+6.5×(3.2-3.12) [(6.1-4.6)+0.8]×0.4
用递等式计算2.98+6.5×(3.2-3.12) [(6.1-4.6)+0.8]×0.4
2.98+6.5×(3.2-3.12)
=2.98+6.5×0.08
=2.98+0.52
=3.5
[(6.1-4.6)+0.8]×0.4
=[1.5+0.8]×0.4
=2.3×0.4
=0.92
2.98+6.5×(3.2-3.12)
=2.98+6.5×0.08
=2.98+0.52
=3.5
[(6.1-4.6)+0.8]×0.4
=(1.5+0.8)×0.4
=2.3×0.4
=0.92