3.7乘6.5加3.5的简便方法?
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3.7*6.5+3.5
=3.7*(10-3.5)+3.5
=37-3.5*3.7+3.5
=37-3.5*2.7
=37-(3.5*3-3.5*0.3)
=37-10.5+1.05
=26.5+1.05
=27.55
=3.7*(10-3.5)+3.5
=37-3.5*3.7+3.5
=37-3.5*2.7
=37-(3.5*3-3.5*0.3)
=37-10.5+1.05
=26.5+1.05
=27.55
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展开全部
3.7×6.5+3.5
=(2.7+1)×6.5+3.5
=2.7×6.5+1×6.5+3.5
=(3-0.3)×6.5+6.5+3.5
=3×6.5-0.3×6.5+(6.5+3.5)
=19.5-1.95+10
=17.55+10
=27.55
=(2.7+1)×6.5+3.5
=2.7×6.5+1×6.5+3.5
=(3-0.3)×6.5+6.5+3.5
=3×6.5-0.3×6.5+(6.5+3.5)
=19.5-1.95+10
=17.55+10
=27.55
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展开全部
3.7X(6.5+3.5)
=3.7X10
=37
=3.7X10
=37
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解:3.7×6.5+3.5
=(4-0.3)×6.5+3.5
=26-1.95+3.5
=26-(2-0.05)+3.5
=26-2+0.05+3.5
=27.55
=(4-0.3)×6.5+3.5
=26-1.95+3.5
=26-(2-0.05)+3.5
=26-2+0.05+3.5
=27.55
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