0.45×7.5+0.045×25简便运算怎么做?
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0.45×7.5+0.045×25
=0.045x10x7.5+0.045x25
=0.045x75+0.045x25
=0.045x(75+25)
=0.045x100
=4.5
=0.045x10x7.5+0.045x25
=0.045x75+0.045x25
=0.045x(75+25)
=0.045x100
=4.5
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0.45×7.5+0.045×25简便运算:
0.45×7.5+0.045×25
=0.45×7.5+0.45×2.5
=0.45×(7.5+2.5)
=0.45×10
=4.5
0.45×7.5+0.045×25
=0.45×7.5+0.45×2.5
=0.45×(7.5+2.5)
=0.45×10
=4.5
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=0.045x10x7.5+0.045x25
=0.045x(10x7.5+25)
=0.045x(75+25)
=0.045x100
=4.5
=0.045x(10x7.5+25)
=0.045x(75+25)
=0.045x100
=4.5
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你对这个回答的评价是?
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