biegłość w operowaniu liczbami po angielsku:

Statistics on the literacy and numeracy of twelve-year-olds.

numeracy /ˈnju: mərəsi; US ˈnu:- / noun [uncountable] a good basic knowledge of mathematics; the ability to understand and work with numbers standards of numeracy and literacy ▶ umiejętność liczenia ⇨

We want to develop numeracy - basic mathematical skills - to use numbers in a particular situation that we are in.

My numeracy skills are poor.