0.2+0.4+…+0.8+0.10+0.12+…+0.98+0.100=请运用公式解答..
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0.2+0.4+…+0.8+0.10+0.12+…+0.98+0.100=请运用公式解答..
0.2+0.4+…+0.8+0.10+0.12+…+0.98+0.100=
请运用公式解答..
0.2+0.4+…+0.8+0.10+0.12+…+0.98+0.100=请运用公式解答..
0.2+0.4+…+0.8+0.10+0.12+…+0.98+0.100
=4*(0.2+0.8)/2+45*(0.10+0.98)/2+0.100
=2+24.3+0.1
=26.4
0.2+0.4+0.6+0.8+0.10+0.12+0.14+……+0.98(用最简便的方法计算)
0.2+0.4+…+0.8+0.10+0.12+…+0.98+0.100=请运用公式解答..
10-9.8+9.6-9.4+9.2-9+...+0.8-0.6+0.4-0.2
0.8+0.88= 0.8+0.88+0.888= 0.8+0.88+0.888+0.8888= 0.8+0.88+0.888+0.8888+……+0.8888888=0.8+0.88=0.8+0.88+0.888=0.8+0.88+0.888+0.8888=0.8+0.88+0.888+0.8888+……+0.8888888=
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)=
5.76×0.2+0.4简算
2+4+6+8+10+……+48+50
九年级英语问题急求解答+++++++++++++++++++++++急求解答+++++++++++++++++++++++
111+222+333+444+555+666+777+888++++++++++++++++++++++999=?
2.46×0.8+1.23×0.4 简算
3+5+7+9+……+73+75=?
计算:1990+19901990+199019901990+…/1991+19911991+199119911991+…
1+2+3+4+……+2012+2013
1+2+3+4…………+49+50+49…+4+3+2+1=?
1+3+5+7+…2011+2013+2015=?
0×1+ 1×2+2 ×3+ 3×4+…… 2012×2013+ 2013 ×2014=?
2003+2005+……+4003分之1+3+5+……+2001