Total a month of sales with SUM
Add up a column of daily sales figures to get the monthly total.
SUM
Excel is the skill most often screened for before an interview and most often overstated on a résumé. Closing that gap is worth more than another line on the CV.
The functions that appear in graduate assessments are a small, stable set: lookups, conditional aggregation, logical tests and text cleaning. Depth in those beats passing familiarity with fifty functions.
Learning by watching. Reading about XLOOKUP produces recognition, not recall — and an assessment asks for recall, on data you have not seen, with someone watching.
Writing lookups and conditional sums from memory, at speed, and explaining the reasoning while you do it.
13 exercises using the situations above, ordered from most approachable to hardest.
Add up a column of daily sales figures to get the monthly total.
SUM
Calculate the mean value of a set of customer orders.
AVERAGE
Use COUNT to find how many rows contain a numeric value.
COUNT
Identify the extremes in a column of values.
MAX · MIN
Multiply quantity by unit price to get a line total.
Divide actual sales by target to get an achievement percentage.
Use LEN to validate that product codes are the right length.
LEN
Use IF to label each rep as meeting or missing their target.
IF
Count how many rows meet a numeric condition.
COUNTIF
Add up only the rows matching a text condition.
SUMIF
Pull the first name out of a single full-name column.
LEFT · FIND
Combine separate address fields into one line, skipping blanks.
TEXTJOIN
Use VLOOKUP with exact match to pull prices from a product table.
VLOOKUP