I want a formula to ignore text values in cell references

[Russellrupert]

If text is input into some cells referenced by a formula I want the formula
to ignore whatever text it finds and just calculate the result of the numbers
in cells. How do i do this?
Presently the formula displays #VALUE! where there is text in one or more of
the cells referenced.

 

[Gary''s Student]

Use ISNUMBER():

In place of A1 use =IF(ISNUMBER(A1),A1,"")

 

[Max]

Just some thoughts .. If it's to sum numbers,
we could use, eg: =SUM(A1:A3)
instead of : =A1+A2+A3

SUM will ignore text,
while : =A1+A2+A3 would return #VALUE!
if there are text within the range

And if there's the possibility of "text" numbers within the range, which
should also be included in the sum together with real numbers, then one way
is to try,
array-entered (press CTRL+SHIFT+ENTER):
=SUM(IF(ISNUMBER(--A1:A3),--A1:A3))

[ =SUM(A1:A3) would ignore text numbers ]