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3.75×4.23×36-125×0.423×2.8.
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3.75×4.23×36-125×0.423×2.8.
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答案和解析
3.75×4.23×36-125×0.423×2.8,
=3.75×4.23×36-12.5×4.23×2.8,
=4.23×(3.75×36-12.5×2.8),
=4.23×(12.5×0.3×36-12.5×2.8),
=4.23×12.5×(0.3×36-2.8),
=4.23×12.5×(10.8-2.8),
=4.23×12.5×8,
=423.
=3.75×4.23×36-12.5×4.23×2.8,
=4.23×(3.75×36-12.5×2.8),
=4.23×(12.5×0.3×36-12.5×2.8),
=4.23×12.5×(0.3×36-2.8),
=4.23×12.5×(10.8-2.8),
=4.23×12.5×8,
=423.
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