0.2+0.4+0.6+0.8+0.10+0.12+0.14+…+0.98=
来源:学生作业帮助网 编辑:六六作业网 时间:2025/01/31 12:49:42
0.2+0.4+0.6+0.8+0.10+0.12+0.14+…+0.98=0.2+0.4+0.6+0.8+0.10+0.12+0.14+…+0.98=0.2+0.4+0.6+0.8+0.10+0.1
0.2+0.4+0.6+0.8+0.10+0.12+0.14+…+0.98=
0.2+0.4+0.6+0.8+0.10+0.12+0.14+…+0.98=
0.2+0.4+0.6+0.8+0.10+0.12+0.14+…+0.98=
0.2+0.4+0.6+0.8=2
下面考虑0.10+0.12+.+0.98
为a1=0.10,an=0.98的等差数列,n=45,则s45=45*a23=45*0.54=24.3
故总和为26.3
0.2+0.4+0.6+0.8+0.1=2.1
0.12+0.14+0.16+0.18.............+0.96+0.98.
98-12=86
86/2=43
43/2=21于1
21+2.1+0.5=23.6
前面应该是0.02.。。。。。0.04。。。.0.06。。。。.0.08吧 -。-
前面该是0.02+0.04+0.06+0.08吧
0.02+0.98=1
0.04+0.96=1
0.06+0.94=1
以此类推
0.48+0.52=1
(0.02到0.48共24个数)
所以0.02+0.04+0.06+0.08+0.10+0.12+0.14+…+0.98
=(0.02+0.98)+(0.04+0.96)+...(0.48+0.52)+0.50
=24+0.50
=24.5
好象是29
0.2+0.4+0.6+0.8+0.10+0.12+0.14+…+0.98=
计算0.2+0.4+0.6+0.8+0.10+0.12+0.14+0.16+0.18+0.20+0.22+...+0.98
计算:0.2+0.4+0.6+0.8+0.10+0.12+0.14+…+0.98(数列计算)过程)必采纳!
40.2+0.2-1.0-0.8-1.0-0.6+0.4
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)
0.1+0.2+0.3+0.4+0.5+0.6+0.7+0.8+0.9+0.10+0.11········0.29+0.30
巧算:0.1+0.2+0.3+0.4+0.5+0.6+0.7+0.8+0.9
(0.1*0.3*0.9+0.2*0.6*1.8+0.3*0.9*2.9)除以(0.1*0.2*0.4+0.2*0.4*0.8+0.3*0.6*1.2)
(0.1*0.3*0.9+0.2*0.6*1.8+0.3*0.9*2.9)除以(0.1*0.2*0.4+0.2*0.4*0.8+0.3*0.6*1.2)
找规律填数急,0.10.1 0.10.1 0.2 0.10.1 0.3 0.3 0.1 0.1 0.4 0.6 0.4 0.10.1 0.1填问号里的数左边冒出来的0.1在第二排上面第一排正中央
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)=
0.2加0.4,加省略号加0.8加0.10加0.12加省略号加0.98加0.100等于几?
简算: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×+0.2×0.6×1.8+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*1.8+0.3*0.9*2.7的解法并说出为什么这样写
0.1×0.2×0.3×0.4×0.5×0.6×0.7×0.8×0.9怎么巧算
0.1*0.2*0.3*0.4*0.5*0.6*0.7*0.8*0.9用简便的方法怎么做
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