Exam 11: Addition of Decimal Fractions

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Decimal fractions represent fractions with denominators that are powers of ten.

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True

What is the total cost of the following order: crown molding, $12.59; base shoe, $9.99; chair rail, $22.75; and quarter round, $10.00?

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55.33

A piece of plywood has an inner core 0.250 inch thick. It is covered by two pieces, each 0.250 inch thick. What is the total thickness?

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0.75

A countertop 1.689 inches thick is covered with laminated plastic 0.0375 inch thick. What is the total thickness of the top?

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Add 9.299 centimeters, 51.545 centimeters, 5.52 centimeters, and 5.56 centimeters.

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Add 0.150 inch and 0.25 inch.

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A contractor pays $2,135.83 for frame lumber, $650.25 for windows, and $175.32 for trim. What is the total cost?

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A homeowner buys the following materials: lumber, $69.15; hardware, $2.15; paint, $11.42; and molding, $2.95. What is the total cost?

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When fractions are written in decimal form, they are called decimal fractions or decimals.

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Add 0.0772 inch, 0.5328 inch, 0.7721 inch, and 0.3776 inch.

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