Sum A1 and A2 with a formula
Your shop just opened and its first two months of revenue are recorded in A1 and A2. Fill the output cell A3 with the total revenue for both months.
Your solution should use cell references so it updates automatically when Test Case input values change.
Test case
1
2
Reset
Submit
A
B
C
D
E
F
G
1
2
3
4
5
6
7
8
9
10
○ Ready Enter formula in highlighted cells, then click Submit.
Test case
1
2
Reset
Submit
A
B
C
D
E
F
G
1
2
3
4
5
6
7
8
9
10
○ Ready Enter formula in highlighted cells, then click Submit.
Notes
SUM is the foundation of spreadsheet math. Prefer ranges (A1:A2) over listing every cell so the formula still works when you insert rows later.
FAQ
How do I sum two cells with a formula?
Write =SUM(A1:A2) (or =A1+A2). Prefer SUM with a range so inserts later still work.
Why is the sheet read-only on SheetDo?
Practice cells stay locked so you focus on writing the formula in the console. The engine applies your formula to the target cell and grades the result.