
展开全部
6.25-4.5÷1.8×2.5
=6.25-(4.5x2.5)/1.8
用0.9约分
=6.25-(5x2.5)/2
用2约分
=6.25-(2.5x2.5)
=6.25-6.25
=0
=6.25-(4.5x2.5)/1.8
用0.9约分
=6.25-(5x2.5)/2
用2约分
=6.25-(2.5x2.5)
=6.25-6.25
=0
展开全部
6.25-4.5÷1.8×2.5
=6.25-4.5÷0.3÷6X2.5
=6.25-1.5÷6X2.5
=6.25-0.25X2.5
=6.25-0.625
=6.25-1+0.375
=5.625
=6.25-4.5÷0.3÷6X2.5
=6.25-1.5÷6X2.5
=6.25-0.25X2.5
=6.25-0.625
=6.25-1+0.375
=5.625
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展开全部
=6.25-2.5×2.5
=6.25-6.25
=0
=6.25-6.25
=0
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