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2016-10-31
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0.36×2.5+6.4×2.5+25
=0.36×2.5+6.4×2.5+10×2.5
=(0.36+6.4+10)×2.5
=16.76×2.5
=4.19×4×2.5
=4.19×(4×2.5)
=4.19×10
=41.9
=0.36×2.5+6.4×2.5+10×2.5
=(0.36+6.4+10)×2.5
=16.76×2.5
=4.19×4×2.5
=4.19×(4×2.5)
=4.19×10
=41.9
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