计算(0.1+0.12+0.123+0.1234)×(0.12+0.123+0.1234+0.12345)-(0.1+0
来源:学生作业帮 编辑:百度作业网作业帮 分类:数学作业 时间:2024/07/05 10:17:30
计算
(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,则A-B=0.1,
(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)
=A×(B+0.12345)-(A+0.12345)×B
=AB+0.12345A-(AB+0.12345B)
=AB+0.12345A-AB-0.12345B
=0.12345×(A-B)
=0.12345×0.1
=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)
=A×(B+0.12345)-(A+0.12345)×B
=AB+0.12345A-(AB+0.12345B)
=AB+0.12345A-AB-0.12345B
=0.12345×(A-B)
=0.12345×0.1
=0.012345.
计算(0.1+0.12+0.123+0.1234)×(0.12+0.123+0.1234+0.12345)-(0.1+0
(0.1+0.12+0.123+0.1234)*(0.12+0.123+0.1234+0.12345)-(0.1+0.1
38.5*(10-0.1)的简便计算
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!
1.23*(45.6/0.123)/4.56怎样用简便方法计算?
递等式计算:(能简就简) 0.10+0.11+0.12+.+0.98+0.99
5.66*99+56.6*0.1(简便方法脱式计算)
(7.77*6+1.11*58)/0.1能简便计算吗?
简便计算:4.8除以【0.1乘以(3.9-1.5)】=
63.2*0.1+6.32*9=(简便计算)
0.1mol/L NaOH 溶液的PH?(计算过程)
0.1+0.3+0.5+0.7.+0.97+0.99=?(列脱式计算)