用递等式如何计算4.5*3.6+5.5*0.34,
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![用递等式如何计算4.5*3.6+5.5*0.34,](/uploads/image/z/186524-44-4.jpg?t=%E7%94%A8%E9%80%92%E7%AD%89%E5%BC%8F%E5%A6%82%E4%BD%95%E8%AE%A1%E7%AE%974.5%2A3.6%2B5.5%2A0.34%2C)
用递等式如何计算4.5*3.6+5.5*0.34,
用递等式如何计算4.5*3.6+5.5*0.34,
用递等式如何计算4.5*3.6+5.5*0.34,
4.5*3.6+5.5*0.34
=4.5*3.6+0.55*3.4
=4.5*3.6+0.5*3.4+0.05*3.4
=4.5*3.6+0.5*3.6-0.5*0.2+0.5*0.34
=5*3.6+0.5(0.34-0.2)
=10*1.8+0.5*0.14
=18+1*0.07
=18.07