I have the months of a year in a row. In each column I have values (e.g.
$/Jan, $/Feb, $/March).
Now I want to write a formula that gives me the sum of the values for the
year to date (ie in March give me the sum of the values for Jan, Feb, & March
but no others).

I use "MONTH(NOW())" to get the current month.

How to I get the sum of the values for this variable number of cells (ie it
grows from 1 to 12 cell values depending upon the month of the year it is)?

thank you