Evening all:
I am trying to sum number values from a column based off a value from a different. How can I do this? =Sum(A)? I want to add the values of A based off the 10 from B.
Here is a simple screen shot of what I want to try to do:

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You can use a
SUMIFto accomplish what I believe you are going for. In cellC1in your example:That would put the sum next to each occurrence of the value in column B. You could copy only the uniques from column B and do the same if that is what you’re looking for: