How do I get correct results when LOOKUP with calculated numbers

[Guest]

I am using LOOKUP and VLOOKUP to lookup data on tables. I have done this
successfully, but I get unusual results when looking up calculated values.
Sometimes the lookup results are correct sometimes not. All values are
numbers, lookup_vector is in descending order. Lookup works when value is
typed in cell not calculated. Unfortunately I need to lookup the value
calculated from a lookup value. calculation is simple ie =D2+0.1

I am specifically looking up the values less than and greater than the
lookup_value. I have been looking up the less than value then adding 0.1 to
get the greater than value.

 

[Alan]

It's often the case that calculated values are formatted to two decimal
places, so for instance 10 divided by three shows in the cell as 3.33 but
the actual value is 3.33333333 etc so if your VLOOKUP is looking for 3.33 it
won't find it.
Try using =ROUND(Your Formula,2) to round to two decimal places,
Regards,
Alan.

 

[Guest]

Thanks Alan,
That fixed my problem. I'm not sure why this was a problem because all
calculations were simple addition, so 4.110 was different than 4.11. It
works now I'm happy.
thanks again