(0.1+0.12+0.123+0.1234)×(0.12+0.123+0.1234+0.12345)-(0.1+0.12+0.123+0.1234+0.12345)×(0.12+0.123+0.1234)
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(0.1+0.12+0.123+0.1234)×(0.12+0.123+0.1234+0.12345)-(0.1+0.12+0.123+0.1234+0.12345)×(0.12+0.123+0.1234)
(0.1+0.12+0.123+0.1234)×(0.12+0.123+0.1234+0.12345)-(0.1+0.12+0.123+0.1234+0.12345)×(0.12+0.123+0.1234)
(0.1+0.12+0.123+0.1234)×(0.12+0.123+0.1234+0.12345)-(0.1+0.12+0.123+0.1234+0.12345)×(0.12+0.123+0.1234)
设(0.1+0.12+0.123+0.1234)=A (0.12+0.123+0.1234)=B
原式=A*(B+0.12345)-(A+0.12345)*B
=AB+0.12345A-(AB+0.12345B).此处是括号,不能没有!
=AB+0.12345A-AB-0.12345B.可直接写,不写上面那一步.
=0.12345*(A-B).乘法分配律
=0.012345
原式表示为A×B-C×D
则A - D = 0.1 = C - B,C-A=0.12345
原式=A×B - A×C + A×C - C×D
=A×(B - C)+ C×( A - D)
=(A - D)×(C - A)
=0.1×0.12345
=0.012345
(0.1+0.12+0.123+0.1234)×(0.12+0.123+0.1234+0.12345)-(0.1+0.12+0.123+0.1234+0.12345)×(0.12+0.123+0.1234)
(0.1+0.12+0.123+0.1234)*(0.12+0.123+0.1234+0.12345)-(0.1+0.12+0.123+0.1234+0.12345)*(0.12+0.123+0.1234)=
一道简算题~(0.1+0.12+0.123+0.1234)×(0.12+0.123+0.1234+0.12345)-(0.1+0.12+0.123+0.1234+0.12345)×(0.12+0.123+0.1234)
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..
跪拜计算方法:0.1+0.12+0.123+0.1234+.+0.123456789=?
0.1+0.12+0.123+0.1234+.+0.123456789=?此题为简算题.
0.1+0.12+0.123+0.1234+.+0.123456789=?此题为简算题.
(0.12+0.23+0.34)*(0.23+0.34+0.45)-(0.12+0.23+0.34+0.45)这是题目,看我打字辛苦的份上帮帮我
0.12+0.14+0.16+0.18…+0.88怎么算0.12+0.14+0.16+0.18…+0.88这个怎么算.给个详细的计算方法.
0.02x/0.03+1=-0.18x+0.18/0.12-1.5-3x/2如题
0.12x+0.15y=39 是12%X+15%Y=39
0.1+0.01+1+0.99+0.9简便
有梁板工程量计算的一些问题①现浇板工程量=2.6×3×2.4×3×0.12=6.739m3②板下梁工程量主梁:0.25×(0.5-0.12)×2.4×3×2+ 0.25×0.50×0.12×4=1.428m3次梁:0.2×(0.4-0.12)×(2.6×3-0.5)×2+0.20×0.40×0.12×4
有梁板工程量计算的一些问题①现浇板工程量=2.6×3×2.4×3×0.12=6.739m3②板下梁工程量主梁:0.25×(0.5-0.12)×2.4×3×2+ 0.25×0.50×0.12×4=1.428m3次梁:0.2×(0.4-0.12)×(2.6×3-0.5)×2+0.20×0.40×0.12×4
线缆规格这些数字分别代表什么?线规 OD:4×8mm,2×【(18/0.12+2/0.10发烧铜)+32/0.12】
用简便方法计算下面各题.(2-0.92)÷(0.12+0.15)(2.4+7.2)÷0.24
2.5×五分之二-0.12÷三分之一+8.36,8.96÷0.56-6.4×2.35简算