6.6×3.3+66.5×67用简便运算怎么算?
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6.6*3.3+66.5*67
=6.6*3.3+(66+0.5)*67
=66*0.33+66*67+0.5*67
=66*(67+0.33)+33.5
=66*67.33+33.5
=4443.78+33.5
=4477.28
=6.6*3.3+(66+0.5)*67
=66*0.33+66*67+0.5*67
=66*(67+0.33)+33.5
=66*67.33+33.5
=4443.78+33.5
=4477.28
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