I'm looking for an on-line calculator for doing additions, subtractions etc.

Hi stu_my801,

Thank you for your question. 
 

Here are links to calculators online.

http://www.math.com/students/calculators/source/basic.htm

http://www.coolmath4kids.com/calculators/arithmetic.html

http://www.calculateforfree.com/

http://www.math.com/homeworkhelp/BasicMath.html

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://www.google.com/help/features.html#calculator

"To use Google's built-in calculator function, simply enter the
calculation you'd like done into the search box and hit the Enter key
or click on the Google Search button. The calculator can solve math
problems involving basic arithmetic, more complicated math, units of
measure and conversions, and physical constants."

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Best regards,
tlspiegel

Considering your title line and your question, you may be looking for
an online calculator that will add fractions and provide the answer as
a fraction.

See if this helps.

http://www.hostsrv.com/webmab/app1/MSP/quickmath/02/pageGenerate?site=quickmath&s1=algebra&s2=simplify&s3=basic

The link did not seem to work.

Thanks.

If you only want to do simple arithmetic, have you tried the one built
into the program / accessories menu.

Hi stu_my801,

Thank you for the 5 stars!  

Best regards,
tlspiegel