Why are the arithmetic keys (divide, multiply, add, subtract) not working on my Casio HR-10RC calculator?
If your Casio HR-10RC is not responding to the arithmetic keys (+, -, ×, ÷) and is simply concatenating numbers, please try the following…
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Casio HR-10RC Printing Calculator User’s Guide — questions & answers
Read product questions and troubleshooting answers linked to Casio HR-10RC Printing Calculator User’s Guide.
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How do I load the D batteries into the Casio HR-10RC Printing Calculator?
To load the D batteries into the Casio HR-10RC Printing Calculator, please follow these steps: 1. Locate the battery compartment on the back of…