Exam 10: Combined Operations With Common Fractions

Two rooms are each 18 feet by 10 1/4 feet, and a third room measures 18 1/2 feet by 20 feet. How many square feet of hardwood flooring will be required for the three rooms?

Convert all fractions that will be used in addition or subtraction to their lowest common denominators.

If 1/4 inch on a drawing represents 1 foot, how many inches on the drawing represents 12 feet?

How many 3 1/2 inch lengths can be cut from a 5 foot pole? (Make no allowance for saw kerfs.)

A 800 foot roll of 151-pound slater's felt is used to repair a roof before laying new shingles. If 1/4 of the roll is used, how many feet remain?

Three people are hired as part-time helpers to pick up after carpenters have completed a construction job. They work 1 3/4 hours, 5 1/4 hours, and 2 hours every day for 5 days. What is the total number of hours all three people work?

Masons are paid $11.30 per hour for a 40 hour week and time and one-half for overtime. How much will a mason be paid for working 44 hours?

A carpenter can place 5 floor joists in 1/4 hour. At this rate, how much time is required to place 100 floor joists?

Fractions in multiplication and division need to be converted to common denominators.

There are 650 square feet of hardwood flooring needed. Hardwood flooring may be ordered only in units of 25 square feet. How many units must be ordered?