Location of the decimal point in slide-rule calculations

1955 ◽  
Vol 32 (7) ◽  
pp. 354
Author(s):  
Helen G. Husted
Keyword(s):  
Decimal Point ◽  
Slide Rule

The Decimal Point and Slide Rule Answers

1952 ◽  
Vol 45 (8) ◽  
pp. 572-577
Author(s):  
E. L. Eagle
Keyword(s):  
Decimal Point ◽  
Slide Rule ◽  
Considerable Difficulty ◽  
Approximate Answer

The placing of the decimal point in the slide rule answer is frequently done through a process of estimating the approximate answer and making placement accordingly.1 For some people, the method Is sometimes time-consuming as well as productive of incorrect conclusions. Shuster2 found that slide rule learners experience considerable difficulty in using this method—indeed, 33.4% of the errors made by the students in his study came from this source. Shuster recommended the “standard number” system3 as being a more desirable method of meeting the problem of the straying decimal point. A method, arising out of the logarithmic nature of the slide rule, is presented here. This method is explained only in connection with its application to the C- and D-scales. It may, however, be extended to include all scales on the Log Log Duplex Trig slide rule.4

Placing the decimal point in slide rule computation

1957 ◽  
Vol 50 (6) ◽  
pp. 424-425
Author(s):  
Russell F. Jacobs
Keyword(s):  
High School ◽  
High School Students ◽  
Decimal Point ◽  
Slide Rule ◽  
School Students

The author suggests ways to help high school students place the decimal point in slide rule calculations.

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