0.33×0.98+0点66×0.01的简便方法？
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0.33×0.98+0.66×0.01
=0.33×0.98+0.33×0.02
=0.33×（0.98+0.02）
=0.33×1
=0.33
也可以是
=0.66×0.49+0.66×0.01
=0.66×（0.49+0.01）
=0.66×0.5
=0.33
=0.33×0.98+0.33×0.02
=0.33×（0.98+0.02）
=0.33×1
=0.33
也可以是
=0.66×0.49+0.66×0.01
=0.66×（0.49+0.01）
=0.66×0.5
=0.33
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