0.36X7.5十0.036X25的简算.
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2014-09-15
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=0.36×7.5+(0.036×10)×(25÷10)
=0.36×7.5+0.36×2.5
=0.36×(7.5+2.5)
=0.36×10
=3.6
=0.36×7.5+0.36×2.5
=0.36×(7.5+2.5)
=0.36×10
=3.6
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