Excel on the web - Practice Problems & Coding Challenges

Challenge - 5 Problems

📊 Formula Result

intermediate

Calculate total sales with mixed currency conversion

You have sales amounts in USD in column A and a conversion rate to EUR in cell B1. Which formula in cell B2 correctly calculates the total sales in EUR for the range A2:A5?

A =SUM(A2:A5)*B1

B =SUM(A2:A5)/B1

C =SUM(A2:A5+B1)

D =SUM(A2:A5*B1)

💡 Hint

Remember to sum the amounts first, then multiply by the conversion rate.

Option A sums the sales amounts first, then multiplies by the conversion rate, giving the correct total in EUR. Option A adds the conversion rate to each amount before summing, which is incorrect. Option A divides the sum by the rate, which reverses the conversion. Option A attempts to multiply the range by the rate inside SUM, which is valid in Excel as it performs element-wise multiplication and then sums, but it is less clear and not the recommended approach.

❓ Function Choice

intermediate

Choose the function to count non-empty cells

You want to count how many cells in the range C2:C10 contain any data (numbers or text). Which function should you use?

A COUNTA(C2:C10)

B COUNT(C2:C10)

C COUNTBLANK(C2:C10)

D COUNTIF(C2:C10, "<>")

💡 Hint

Think about which function counts all non-empty cells regardless of content type.

COUNTA counts all non-empty cells including text and numbers. COUNT counts only numbers. COUNTBLANK counts empty cells. COUNTIF with "<>" counts non-empty cells but is less direct than COUNTA.

📊 Formula Result

advanced

Find the output of a nested IF formula

Given cell A1 contains the value 75, what is the result of this formula?

=IF(A1>90, "Excellent", IF(A1>60, "Good", "Needs Improvement"))

A "Excellent"

B "Good"

C "Needs Improvement"

D 0

💡 Hint

Check the conditions in order and see where 75 fits.

The formula checks if A1 is greater than 90 first, which is false. Then it checks if A1 is greater than 60, which is true, so it returns "Good".

🎯 Scenario

advanced

Identify the correct formula to extract the year from a date

You have a date in cell D3 (e.g., 2024-06-15). Which formula correctly extracts the year as a number?

A =MONTH(D3)

B =TEXT(D3, "YYYY")

C =DATEVALUE(D3)

D =YEAR(D3)

💡 Hint

Look for the function that returns the year part as a number.

YEAR returns the year number from a date. TEXT returns a text string, DATEVALUE converts a date string to a serial number, and MONTH returns the month number.

❓ data_analysis

expert

Determine the number of unique values in a range

You want to find how many unique values are in the range E2:E20. Which formula will give the correct count of unique values in Excel on the web?

A =COUNT(E2:E20)

B =COUNTIF(E2:E20, UNIQUE(E2:E20))

C =COUNTA(UNIQUE(E2:E20))

D =SUMPRODUCT(1/COUNTIF(E2:E20, E2:E20))

💡 Hint

Use the UNIQUE function combined with a counting function.

UNIQUE returns the distinct values. COUNTA counts how many items are in that list. COUNTIF and SUMPRODUCT formulas are more complex and may not work correctly in Excel on the web. COUNT counts only numbers, not unique values.

Practice

1. What is a key benefit of using Excel on the web compared to the desktop version?

easy

A. You can access and edit your spreadsheets from any device with internet.

B. It has more advanced formulas than the desktop version.

C. It does not save your work automatically.

D. You cannot share files with others.

Solution

1. Step 1: Understand Excel on the web features

   Excel on the web allows access from any device connected to the internet.

2. Step 2: Compare with other options

   Options A, B, and D are incorrect because Excel on the web supports common formulas, saves automatically, and allows sharing.

3. Final Answer:

   You can access and edit your spreadsheets from any device with internet. -> Option A

4. Quick Check:

   Access from any device = C [OK]

Hint: Remember: Excel on the web works anywhere with internet [OK]

Common Mistakes:

• Thinking Excel on the web has more formulas than desktop
• Believing it does not save automatically
• Assuming sharing is not possible

2. Which of these is the correct way to write a formula in Excel on the web to add cells A1 and B1?

easy

A. A1 plus B1

B. =SUM(A1+B1)

C. SUM(A1,B1)

D. =A1+B1

Solution

1. Step 1: Recall formula syntax for addition

   In Excel, to add two cells, use =A1+B1.

2. Step 2: Check each option

   =SUM(A1+B1) uses SUM incorrectly with plus sign inside. SUM(A1,B1) misses '=' and uses wrong syntax. A1 plus B1 is not a formula.

3. Final Answer:

   =A1+B1 -> Option D

4. Quick Check:

   Correct addition formula = A [OK]

Hint: Use '=' to start formulas, then write the operation [OK]

Common Mistakes:

• Using SUM with plus sign inside parentheses
• Omitting '=' at the start
• Writing formulas as plain text

3. If cell A1 contains 10 and B1 contains 5, what will the formula =IF(A1>B1, "Yes", "No") display in Excel on the web?

medium

A. No

B. Yes

C. 10

D. 5

Solution

1. Step 1: Evaluate the condition A1 > B1

   Since A1 is 10 and B1 is 5, 10 > 5 is TRUE.

2. Step 2: Apply IF formula logic

   IF condition is TRUE, so formula returns "Yes".

3. Final Answer:

   Yes -> Option B

4. Quick Check:

   Condition true = Yes [OK]

Hint: IF returns first value if true, second if false [OK]

Common Mistakes:

• Confusing which value IF returns on true
• Mixing up cell values with formula output
• Ignoring quotation marks around text

4. You entered the formula =AVERAGE(A1:A5 in Excel on the web but it shows an error. What is the problem?

medium

A. AVERAGE function does not work on ranges

B. Formula should start with SUM, not AVERAGE

C. Missing closing parenthesis ")"

D. Cells A1 to A5 must be numbers

Solution

1. Step 1: Check formula syntax

   The formula =AVERAGE(A1:A5 is missing the closing parenthesis ")" at the end.

2. Step 2: Understand function requirements

   AVERAGE works on ranges and cells can be numbers; missing parenthesis causes syntax error.

3. Final Answer:

   Missing closing parenthesis ")" -> Option C

4. Quick Check:

   Syntax error due to missing ")" = B [OK]

Hint: Always close parentheses in formulas [OK]

Common Mistakes:

• Forgetting to close parentheses
• Thinking AVERAGE can't use ranges
• Assuming formula must start with SUM

5. You want to share an Excel on the web file with your team so everyone can edit it at the same time. Which steps should you follow?

hard

A. Upload the file to OneDrive and use the Share button to invite team members

B. Save the file locally and email it to each person

C. Send a screenshot of the file to the team

D. Copy and paste the data into a Word document and share it

Solution

1. Step 1: Understand sharing in Excel on the web

   Excel on the web integrates with OneDrive for cloud storage and sharing.

2. Step 2: Identify correct sharing method

   Uploading to OneDrive and using the Share button allows real-time editing by multiple users.

3. Final Answer:

   Upload the file to OneDrive and use the Share button to invite team members -> Option A

4. Quick Check:

   Use OneDrive Share for collaboration = A [OK]

Hint: Use OneDrive Share button for live collaboration [OK]

Common Mistakes:

• Emailing local files causes version conflicts
• Sharing screenshots or Word docs loses spreadsheet features
• Not using cloud storage for collaboration