Extract Values from three sheets into final sheet based upon the there names

Question

I have one workbook containing data in three sheets [Sheet1, Sheet2 and Sheet3] and fourth sheet is the main sheet.

I would like to add the values from three sheets into main sheet based upon the name if match. for example,

Sheet 1
A,B [columns]
test1,1000
test2,2000

Sheet 2
A,B [columns]
test2,1000
test1,2000

Sheet 3
A,B [columns]
test1,1000
test2,2000

Expected Results...

Main Sheet
test1, 4000
test2, 5000

Can you please suggest me the formula or any reference for this?

Answer 1

I think that's what you need - If I understood the input correctly, assuming you have Sheet1:Sheet3 in your workbook and SUM sheet which is "main" (formulas are for the last one):

1. Type in A1: test1 or any value you want to summarize.
2. Type in B1: =SUM((Sheet1!A:A=A1)*Sheet1!B:B,(Sheet2!A:A=A1)*Sheet2!B:B,(Sheet3!A:A=A1)*Sheet3!B:B), but press CTRL+SHIFT+ENTER instead of usual ENTER - this will define an ARRAY formula and will result in {} brackets around it (but do NOT type them manually!).
3. Add new values to sum up into A and autofill formula in B down as required.

Sample file: https://www.dropbox.com/s/95n46kavpfj4xs7/Sum3Sheets.xlsx

Answer 2

The formula for test1 are:

    =Sheet1!A2+Sheet2!B2+Sheet3!A2

The formula for test2 are:

    =Sheet1!B2+Sheet2!A2+Sheet3!B2

Then use the Fill to fill this formula to all columns.

Updated:

HLOOKUP("Test2",Sheet1!A1:B2,2)+HLOOKUP("Test2",Sheet2!A1:B2,2)+HLOOKUP("Test2",Sheet3!A1:B2,2)