0.25*6.5+2.5*3.5的简便运算是?
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解:
0.25×6.5+2.5×3.5
=0.25×6.5+0.25×10×3.5
=0.25×6.5+0.25×35
=0.25×(6.5+35)
=0.25×41.5
=10.375
0.25×6.5+2.5×3.5
=0.25×6.5+0.25×10×3.5
=0.25×6.5+0.25×35
=0.25×(6.5+35)
=0.25×41.5
=10.375
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