Hexadecimal number multiplication

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SUMMARY

The discussion centers on the multiplication of hexadecimal numbers, specifically the discrepancy between a user's solution and the book's answer. The user initially calculated the product as 6F, while the book provided the correct answer of 78. Verification using the Windows Calculator in Programmer mode confirmed the book's solution. The user acknowledged a mistake in carrying during the calculation, which led to the incorrect result.

PREREQUISITES
  • Understanding of hexadecimal number system
  • Basic multiplication techniques in mathematics
  • Familiarity with using calculators in Programmer mode
  • Knowledge of carrying in arithmetic operations
NEXT STEPS
  • Practice hexadecimal multiplication with various examples
  • Explore the functionality of the Windows Calculator in Programmer mode
  • Learn about common mistakes in hexadecimal arithmetic
  • Study the principles of number carrying in different numeral systems
USEFUL FOR

Students learning hexadecimal arithmetic, educators teaching number systems, and anyone interested in improving their mathematical calculation skills.

momentum
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I am trying to multiply hexadecimal numbers.

Here is what my book has given

lOD7yDy.png

Here is my solution
0vDxRa0.png


book solution and my solution has differed in the red marked area.

which solution is correct?

am I doing anything wrong here? I get 6 F but book wrote 78 in that red marked area.

Need help with this part.

Thanks

 

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momentum said:
I am trying to multiply hexadecimal numbers.

Here is what my book has given

View attachment 225710
Here is my solution
View attachment 225711

book solution and my solution has differed in the red marked area.

which solution is correct?

am I doing anything wrong here? I get 6 F but book wrote 78 in that red marked area.

Need help with this part.

Thanks
The book's answer is correct for the part you circled. I didn't check anything else. I verified this using the calculator in Windows, in Programmer mode.
A possible reason for the number you got is that you didn't carry correctly.
 
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Likes momentum
I get the book solution.
You have B * AFC4 = 6E000 + A500 + 840 + 2C and the 6E000 + A000 = 78000
 
Mark44 said:
A possible reason for the number you got is that you didn't carry correctly.

Yes. I made mistake in carry. corrected now.
Thanks. It helped a lot.
 

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