The opposite is true too! I've got clients who are in "numerate" jobs like IT consultants, architects, engineers, etc., who really struggle with basic numeracy although they're fine with complex calculations, logic, etc.
A very common one is VAT. They don't "get" the difference between net and gross. If they've paid, say, £1.20 for a Mars bar, they seem to think that the 20% VAT they've paid is 24p rather than the correct figure of 20p. Complete inability to understand grossing up/down from net to gross and gross to net! That matters massively when they're invoicing their clients for work done and expenses etc., or doing their VAT return and reclaiming the VAT spent on their costs. Simple percentages are probably second or third year at secondary school, but these are people with good passes in Maths at GCSE and A level and some with a Maths degree, but "day to day" basic numeracy seems to be alien to them. One of them is a structural engineer doing all kinds of amazingly complex calculations for strengths of RSJs, angles and sizes of pitched roofs etc., but can barely pay the right figure when paying a couple of bills, and whose "book-keeping" is all over the place with columns that don't add up or cross cast - even on computerised spreadsheets! Whereas I've also got "trades" clients who barely have any school qualifications at all who "get it" straight away, can invoice with no problems, manage their business finances, no problems, do their book-keeping, no problems.
There's a real and tangible difference between educated "Maths" and basic lifestyle day to day numeracy, and I think it's time that our education system accepted and embraced the difference. Having foundation and Higher level Maths isn't anywhere near enough of a difference! I'd go further and split it into two distinct subjects where pupils take numeracy first, and ONLY when they pass (which can be at any year) a numeracy test, can they move up to more formal Maths learning/exams. Those who struggle at the numeracy level, just carry on year on year until they do reach the level, but obviously won't move up to Maths as it's own subject, which is right as they'll never do well at higher concepts if they struggled at the basic/core level of numeracy.