=ROUND(A9/LOOKUP(A9,{0,1,10,40,100},{0.05,0.1,1,5,10}),0)*LO OKUP(A9,{0,1,10,40,100},{0.05,0.1,1,5,10})

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HTH

Bob

"stephenp" wrote in message
...
I would like to be able to enter numbers in a cell and have the number of
significant figures automatically corrected defined by the following table

Number Report to nearest
0 -1.0 0.05
1 - 10 0.1
10 - 40 1
40 - 100 5
100 - 400 10