Rechenschieber
Palabras clave
abacus,
count,
mathematic,
mathematic,
pay,
sphere,
ball,
colourful,
value,
number,
bill,
school,
pupil,
blue,
yellow,
white,
green,
colours,
calculation,
compute,
business,
trade,
rod,
problem,
office,
business,
problem solving,
resolution,
cost,
bead,
industry,
balance,
interest,
interest,
compute,
loading,
money,
euro
){kind=link}