When solving problems involving combined operations, if a problem asks you to find the difference, it is a subtraction problem.
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Q1: At high speed, a blower delivers 2,720
Q2: An installer finds that it takes 5
Q3: Perform the indicated operation and solve: 1,111+
Q4: A hot water baseboard radiator has 13
Q5: Perform the indicated operation and solve: 3,508
Q6: If five technicians work a total of
Q7: Perform the indicated operation and solve: 6,075
Q8: A stockroom has 45 boxes of valves.
Q10: Perform the indicated operation and solve: 994
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