VBA: Convert Text to Number

I have columns of numbers that, for whatever reason, are formatted as text. This prevents me from using arithmetic functions such as the subtotal function. What is the best way to convert these "text numbers" to true numbers?

Here is a screenshot of the specific issue:

I've tried these snippets to no avail:

Columns(5).NumberFormat = "0"

and

 Selection.PasteSpecial Paste:=xlPasteValues, Operation:=xlNone, SkipBlanks _
        :=False, Transpose:=False

Use the below function (changing [E:E] to the appropriate range for your needs) to circumvent this issue (or change to any other format such as "mm/dd/yyyy"):

[E:E].Select
With Selection
    .NumberFormat = "General"
    .Value = .Value
End With

P.S. In my experience, this VBA solution works SIGNIFICANTLY faster on large data sets and is less likely to crash Excel than using the 'warning box' method.

This can be used to find all the numeric values (even those formatted as text) in a sheet and convert them to single (CSng function).

For Each r In Sheets("Sheet1").UsedRange.SpecialCells(xlCellTypeConstants)
    If IsNumeric(r) Then
       r.Value = CSng(r.Value)
       r.NumberFormat = "0.00"
    End If
Next

I had this problem earlier and this was my solution.

With Worksheets("Sheet1").Columns(5)
    .NumberFormat = "0"
    .Value = .Value
End With