A couple of ancient civilizations invented number systems with place values. The oldest was the Mayan system with 60 at its base, around 3400 BC. The Egyptians invented a 10 base system in 3100 BC. The modern place value system also has 10 as its compression figure.
The national average cost for painting new construction interiors is $3.65 per sq. ft. (heated floor space) that does not include casework like cabinets vanities etc. Repaints do not require the same volume of paint but do have a different set of challenges.
Mural and Trompe L'oeil Costs. Specialty painting by the hour costs between $40 to $50 on average. Paint might range between $75 to $90, costing an additional $40 to $50 per hour. The painter's skill and experience are also determining factors in the cost of specialty painting. Painting a home interior: Interior walls and ceilings will top the list of projects; primer will need to be factored into the total costs. 2  See the current average cost to paint a home interior. 3  Painting a home exterior: Siding, decks and garages may be included in projects, all of which will vary in cost.