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当計算对數的時候,学生常常不考慮他們所从事計算的量是準確的呢还是近似的,因此就会得到不合理的計算和答案,这答案可能与所給的近似數的準確度不相適应。必須教給学生,在利用对数表作实际計算的時候,他們应当仔細地考慮,是根据什么样的已知数(準確的还是近似的)來進行运算,並且根据这點來选用合適的对數表。如在所給的例題或習題中含有的是一些準
When calculating logarithms, students often do not consider whether the amount of calculation they are doing is accurate or similar, and therefore will get irrational calculations and answers. This answer may not be consistent with the accuracy of the given approximation. adapt. Students must be taught that when using logarithmic tables for actual calculations, they should carefully consider what kind of known (accurate or approximate) numbers are to be used to perform calculations and select appropriate pairs based on this point. Number table. For example, given examples or exercises contain some criteria