5.41×9.9+0.54+1用简便方法怎么做?
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5.41×9.9+0.54+1
=5.41×10-5.41×0.1+0.54+1
=54.1-0.541+0.54+1
=55.1-0.001
=55.099
=5.41×10-5.41×0.1+0.54+1
=54.1-0.541+0.54+1
=55.1-0.001
=55.099
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5.41×9.9+0.54+1
=5.4*9.9+0.01*9.9+5.4*0.1+1
=5.4*(9.9+0.1)+0.099+1
=55.099
=5.4*9.9+0.01*9.9+5.4*0.1+1
=5.4*(9.9+0.1)+0.099+1
=55.099
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5.41×9.9+0.54+1
=5.41×(10-0.1)+0.54+1
=54.1-0.541+0.54+1
=55.1-0.001
=55.099
=5.41×(10-0.1)+0.54+1
=54.1-0.541+0.54+1
=55.1-0.001
=55.099
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5.41×9.9+0.541
=5.41×(9.9+0.1)
=5.41×10
=54.1
=5.41×(9.9+0.1)
=5.41×10
=54.1
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