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3.3×4.6+33×0.55-0.33简便计算
2个回答
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3.3×4.6+33×0.55-0.33
=3.3×4.6+3.3×10×0.55-3.3×0.1
=3.3×4.6+3.3×(10×0.55)-3.3×0.1
=3.3×(4.6+5.5-0.1)
=3.3×10
=33
=3.3×4.6+3.3×10×0.55-3.3×0.1
=3.3×4.6+3.3×(10×0.55)-3.3×0.1
=3.3×(4.6+5.5-0.1)
=3.3×10
=33
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