Missing Values Cause Calculations to Result in Empty Fields in Microsoft Access

In this Microsoft Access tutorial I'm going to teach you how to fix a problem that occurs when missing values on your form result in empty fields for your calculations.
Liam from Omaha, Nebraska (a Platinum Member) asks: I have a form where I enter in a couple of fixed costs for a service order and then I itemize the services performed to get a total. The problem is it all works great unless one of those things is missing, then I get a blank result. What am I doing wrong?
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NZ Function: 599cd.com/NZ
Value From Subform: 599cd.com/ValueFromSubform
LINKS:
Invoicing: 599cd.com/Invoicing
Null: 599cd.com/Null
Null Math: 599cd.com/NullMath
Format Currency: 599cd.com/FormatCurrency
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Access Expert Series: 599cd.com/Expert
USAGE:
=Nz([SetupFee])+Nz([AnotherFee])+NZ(OrderDetailF.Form!SumExtPrice)
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QUESTIONS:
Please feel free to post your questions or comments below. Thanks.

[@Shadow.Dragon]

NZ is a very, very handy formula!!!

[@dolittlediehard1670]

It's a very good video I like it. I am not sure how much you helped but I think you're 50% helped me pass my Access exam. The teacher said he hasn't taught Access for ten years. He didn't have many examples either. He pretty much told us we gotta go and learn it ourselves. That said, what he did give us was quality. When I get some money I will come back and tip you because I won't be able to forget how much you helped me prepare for this exam. On another note, I have little challenge for you. I think you'll like it (not a lot) but you'll like it. Please try to avoid using VBA (macros are ok) but if you really have to then ok. The challenge is to use Microsoft Word as a form for Access. So when I double click on the word document, it opens the database in silent mode and the data you enter into the word document appears in your database.

[@AH_World_bh]

Learned lot of things from your videos