Subtotals in Excel - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the formula to calculate the subtotal of the range A1 to A10.

Excel

=SUBTOTAL([1], A1:A10)

Drag options to blanks, or click blank then click option'

A101

B9

C109

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1 instead of 109 sums all cells including hidden ones.

Using 9 sums all cells including hidden ones.

The function number 109 tells SUBTOTAL to sum the visible cells only, ignoring hidden rows.

2fill in blank

medium

Complete the formula to calculate the average of visible cells in B2:B20.

Excel

=SUBTOTAL([1], B2:B20)

Drag options to blanks, or click blank then click option'

A109

B101

C9

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1 calculates average including hidden rows.

Using 9 or 109 calculates sum, not average.

The function number 101 calculates the average ignoring hidden rows.

3fill in blank

hard

Fix the error in the formula to count visible numeric cells in C3:C15.

Excel

=SUBTOTAL([1], C3:C15)

Drag options to blanks, or click blank then click option'

A102

B3

C2

D103

Attempts:

3 left

💡 Hint

Common Mistakes

Using 2 counts all numeric cells including hidden ones.

Using 3 or 103 counts non-numeric cells.

Function number 102 counts visible numeric cells ignoring hidden rows.

4fill in blank

hard

Fill both blanks to calculate the maximum of visible cells in D5:D25, ignoring hidden rows.

Excel

=SUBTOTAL([1], [2])

Drag options to blanks, or click blank then click option'

A104

BD5:D25

C105

DD1:D20

Attempts:

3 left

💡 Hint

Common Mistakes

Using 105 calculates minimum instead of maximum.

Using wrong range like D1:D20.

Function number 104 calculates the maximum ignoring hidden rows. The range is D5:D25.

5fill in blank

hard

Fill both blanks to calculate the count of visible non-empty cells in E10:E30.

Excel

=SUBTOTAL([1], [2])

Drag options to blanks, or click blank then click option'

ACOUNTA

BE10:E30

C103

D102

Attempts:

3 left

💡 Hint

Common Mistakes

Using 102 counts only numeric cells.

Using function name 'COUNTA' instead of function number.

Function number 103 counts visible non-empty cells ignoring hidden rows. The range is E10:E30.

Practice

1. What does the SUBTOTAL function do in Excel?

easy

A. Calculates sums, averages, counts, and other operations on filtered or grouped data

B. Sorts data alphabetically or numerically

C. Removes duplicates from a list

D. Creates charts from selected data

Solution

1. Step 1: Understand the purpose of SUBTOTAL

   The SUBTOTAL function is designed to perform calculations like sum, average, or count on a range of data, especially useful when data is filtered or grouped.

2. Step 2: Compare with other options

   Sorting, removing duplicates, and creating charts are different Excel features unrelated to SUBTOTAL.

3. Final Answer:

   Calculates sums, averages, counts, and other operations on filtered or grouped data -> Option A

4. Quick Check:

   SUBTOTAL = Group calculations [OK]

Hint: SUBTOTAL works on filtered data for accurate group totals [OK]

Common Mistakes:

• Confusing SUBTOTAL with sorting or filtering
• Thinking SUBTOTAL removes duplicates
• Assuming SUBTOTAL creates charts

2. Which of the following is the correct syntax for the SUBTOTAL function to sum values in range A2:A10?

easy

A. =SUBTOTAL(1, A2:A10)

B. =SUBTOTAL(109, A2:A10)

C. =SUBTOTAL(9, A2:A10)

D. =SUBTOTAL(10, A2:A10)

Solution

1. Step 1: Identify function number for SUM

   In SUBTOTAL, function number 9 means SUM including hidden rows, while 109 means SUM ignoring hidden rows.

2. Step 2: Choose correct syntax for basic sum

   Since the question does not specify ignoring hidden rows, 9 is the standard function number for SUM.

3. Final Answer:

   =SUBTOTAL(9, A2:A10) -> Option C

4. Quick Check:

   SUM function number = 9 [OK]

Hint: Use 9 for SUM in SUBTOTAL unless ignoring hidden rows [OK]

Common Mistakes:

• Using 1 which is for AVERAGE
• Using 10 which is for COUNT
• Confusing 9 and 109 without context

3. Given the data in cells A2:A6 as {10, 20, 30, 40, 50} and rows 4 and 5 are manually hidden, what is the result of =SUBTOTAL(9, A2:A6)?

medium

A. 90

B. 60

C. 100

D. 150

Solution

1. Step 1: Understand SUBTOTAL with function number 9

   Function 9 sums visible and hidden rows, so it includes all values including manually hidden rows.

2. Step 2: Calculate sum of all values

   Sum of 10+20+30+40+50 = 150, but since rows 4 and 5 (values 40 and 50) are manually hidden, SUBTOTAL(9, ...) still includes them.

3. Step 3: Reconsider filtering effect

   Actually, SUBTOTAL with 9 includes manually hidden rows, so sum is 150. But question says rows 4 and 5 are manually hidden. SUBTOTAL(9, ...) includes hidden rows, so sum is 150.

4. Step 4: Check options

   150 is the total sum. 60 is sum of visible rows only (10+20+30=60).

5. Final Answer:

   150 -> Option D

6. Quick Check:

   SUBTOTAL(9) sums all rows including hidden [OK]

Hint: Function 9 sums all rows, even hidden ones [OK]

Common Mistakes:

• Assuming manually hidden rows are excluded with function 9
• Confusing function 9 with 109
• Adding only visible rows mistakenly

4. You want to sum only visible rows in range B2:B10, but your formula =SUBTOTAL(9, B2:B10) includes hidden rows. How do you fix it?

medium

A. Add a filter to the data

B. Change function number to 109: =SUBTOTAL(109, B2:B10)

C. Use =SUM(B2:B10) instead

D. Use =SUBTOTAL(1, B2:B10)

Solution

1. Step 1: Understand difference between function numbers 9 and 109

   Function 9 sums all rows including hidden, while 109 sums only visible rows, ignoring manually hidden rows.

2. Step 2: Fix formula to sum visible rows only

   Change function number from 9 to 109 to exclude hidden rows in the sum.

3. Final Answer:

   Change function number to 109: =SUBTOTAL(109, B2:B10) -> Option B

4. Quick Check:

   Use 109 to sum visible rows only [OK]

Hint: Use 109 to exclude hidden rows in SUBTOTAL sum [OK]

Common Mistakes:

• Using SUM which ignores filtering
• Using function number 1 which is AVERAGE
• Thinking adding a filter fixes formula automatically

5. You have sales data in column C with some rows filtered out and some manually hidden. You want to calculate the average sales of only visible rows and also count how many visible sales entries there are. Which formulas should you use?

hard

A. =SUBTOTAL(101, C2:C100) for average and =SUBTOTAL(103, C2:C100) for count

B. =SUBTOTAL(1, C2:C100) for average and =SUBTOTAL(2, C2:C100) for count

C. =AVERAGE(C2:C100) and =COUNT(C2:C100)

D. =SUBTOTAL(109, C2:C100) for average and =SUBTOTAL(110, C2:C100) for count

Solution

1. Step 1: Identify function numbers for average and count excluding hidden rows

   Function numbers 101 and 103 calculate average and count respectively, ignoring hidden rows.

2. Step 2: Confirm formulas for visible rows only

   Using =SUBTOTAL(101, C2:C100) gives average of visible rows; =SUBTOTAL(103, C2:C100) counts visible numeric entries.

3. Final Answer:

   =SUBTOTAL(101, C2:C100) for average and =SUBTOTAL(103, C2:C100) for count -> Option A

4. Quick Check:

   101 = average visible, 103 = count visible [OK]

Hint: Use 101 for average and 103 for count on visible rows [OK]

Common Mistakes:

• Using 1 and 2 which include hidden rows
• Using AVERAGE and COUNT ignoring filters
• Confusing function numbers 109 and 110 which are for SUM and COUNT ignoring hidden rows