0.1+0.01+1+0.99+0.9简便
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0.1+0.01+1+0.99+0.9简便0.1+0.01+1+0.99+0.9简便0.1+0.01+1+0.99+0.9简便0.1+0.01+1+0.99+0.9=(0.1+0.9)+(0.01+0
0.1+0.01+1+0.99+0.9简便
0.1+0.01+1+0.99+0.9简便
0.1+0.01+1+0.99+0.9简便
0.1+0.01+1+0.99+0.9
=(0.1+0.9)+(0.01+0.99)+1
=1+1+1
=3
0.1+0.01+1+0.99+0.9简便
0.01+0.02+0.03+.+0.98+0.99=
一道简单的巧算题1+0.99-0.98-0.97+0.96+0.95-0,94-0.93+……+0.04+0.03-0.02-0.01
化简式子求值{1/(n+3)×n}+{1/(n+3)(n+3+3)}+{1/(n+3+3)(n+3+3+3)}/是分数线
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20 =
1+1+2+2+3+3+4+4二?
111+11+1+1
九年级英语问题急求解答+++++++++++++++++++++++急求解答+++++++++++++++++++++++
111+222+333+444+555+666+777+888++++++++++++++++++++++999=?
1+2+...+999
(2+4+6+.+98+100)-(1+3+5+.+97+99)
0.1×0.2×0.4+0.2×0.4×0.8+0.3×0.6×1.2)分之(0.1×0.3×0.9+0.2×0.6×0.8+0.3×0.9×2.7)
(0.1×0.2×0.4+0.2×0.4×0.8+0.3×0.6×1.2)分之(0.1×0.3×0.9+0.2×0.6×0.8+0.3×0.9×2.7)=
(1+3+5+.+2001+2003+2005)-(2+4+6+.+2000+2002+2004)
(1+97分之1)+(2+97分之2)+(3+97分之3)+⋯+(96+97分之96)+(97+97分之97)的简算.
1+2+3.+173+174=?
1+2+3+4+5.(简算)
2+3+1+100+101