This is one of those times when English and American differ confusingly.

Strictly, in the UK "biscuits" are to the French form, like cookies but always crisps.
However we also use "cookies" as a term, though strictly cookies are not crisp.
The similar savoury things are "crackers", or a specific oatmeal type are often "oatcakes"
The thinks that in the US that you call biscuits are more like the English "scone".

Whilst on that, what Americans call fries we tend to call chips, though we're increasingly using fries to mean the to mean the slim ones; what you call chips we call crisps.

Ain't language funny?

On the specific question, I've never even looked first for a tear-strip. Usually I just open from the end seal. If that doesn't work I may look for a tear-strip, or I may just run a sharp knife between the biscuits/cookies/crackers/oatcakes and cut the wrapper open that way.

Jazz relative beginner, starting at a much older age than was helpful.
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