
0.23+1.28+0.45+2.33+0.77+0.18+2.55+3.67的简便方法?
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0.23+1.28+0.45+2.33+0.77+0.18+2.55+3.67
=(0.23+0.77)+(0.45+2.55)+(2.33+3.67)+(1.28+0.18)
=1+3+6+1.46
=10+1.46
=11.46
=(0.23+0.77)+(0.45+2.55)+(2.33+3.67)+(1.28+0.18)
=1+3+6+1.46
=10+1.46
=11.46
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