论文部分内容阅读
1.纯小数必须写出小数点前用以定位的“0”。数值有效位数末尾的“0”也不能省略,应全部写出。例如:1.500、1.750、2.000不能写作1.5、1.75、2。2.数值的修约按照简明口诀“4舍6入5看右,5后有数进上去,尾数为0向左看,左数奇进偶舍弃”进行。例如:修约到1位小数,12.149修约为12.1;12.169修约为12.2;12.150修约为12.2,12.250修约为12.2。3.附带长度单位的数值相乘,每个数值后单
1. Pure decimal must be written before the decimal point to locate “0 ”. “0 ” at the end of the number of significant digits can not be omitted, should be written out. For example: 1.500,1.750,2.000 can not be written 1.5,1.75,2.2. The value of rounding in accordance with concise formulas “4 to 6 into 5 to see the right, after 5 into the number, the mantissa is 0 to the left, Even give up ”. For example: rounding up to a decimal, 12.149 rounding is about 12.1; 12.169 rounding is about 12.2; 12.150 rounding is about 12.2,12.250 rounding is about 12.2.3. The length of the unit with the value of the multiplier, each value of a single