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.
21 exercises using the situations above. Work down the levels — each one assumes the one before it.
One function, one step, a small and tidy dataset.
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
Divide a unit count by the case size to see how many cases were ordered.
Subtract leave taken from entitlement to see what each person has left.
Open a cell for editing without reaching for the mouse or the formula bar.
Copy the cell above into the cells you have selected, without dragging.
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
Mark an order when either of two independent conditions is true.
OR · IF
Pin down what $ changes about a reference, and what it does not.
Read an error code as a diagnosis rather than a failure.
Two or three functions combined, or one function with conditions.
Use VLOOKUP with exact match to pull prices from a product table.
VLOOKUP
Join address parts into one line without leaving gaps where a field is empty.
TEXTJOIN
Prefer to work in real Excel? Download the practice files — the same datasets with the answer cells left blank. You lose the feedback, which is the part that does the teaching.
These are not specific to student — they are the keystrokes and the misconceptions that catch everyone out, whatever the spreadsheet is about.
Open a cell for editing without reaching for the mouse or the formula bar.
Copy the cell above into the cells you have selected, without dragging.
Stamp the current date into a cell as a fixed value.
Pin down what $ changes about a reference, and what it does not.
Read an error code as a diagnosis rather than a failure.
Extend a selection to the last filled row in one press.
Cycle a reference through its absolute and relative forms while editing.
Reach the paste-special dialog to drop formulas and keep results.
Identify the one situation VLOOKUP genuinely cannot handle.
VLOOKUP · XLOOKUP
Pick the right summary statistic for a set with one huge outlier.
AVERAGE · MEDIAN
Recall the argument order that differs between SUMIF and SUMIFS.
SUMIF · SUMIFS
Diagnose a match failure where both values look identical on screen.
XLOOKUP