
2个回答
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2.25÷7.5×(3.25-2.5)
=2.25÷7.5×0.75
=0.3×0.75
=0.225
简便算法:
2.25÷7.5×(3.25-2.5)
=2.25÷7.5×0.75
=2.25×(0.75÷7.5)
=2.25×0.1
=0.225
=2.25÷7.5×0.75
=0.3×0.75
=0.225
简便算法:
2.25÷7.5×(3.25-2.5)
=2.25÷7.5×0.75
=2.25×(0.75÷7.5)
=2.25×0.1
=0.225
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