Exam 5: Combined Operations With Whole Numbers

It is often a good idea to write down all of the known information, so you can see it in one place before you begin to solve the problem.

The key to solving combined operation problems is to think through the problem and determine what steps must be taken first.

A 7-floor apartment building has an average of 7 doors per apartment, and there are 7 apartments on each floor. How many doors are required?

The cost of building garages at a new development is $10,500 per garage. If a subcontractor builds five and then sells four at $12,500 each to the developer, how much does the subcontractor now have invested?

9576 - 8838 __________________

Four helpers are hired and paid $22 per hour. One helper works 5 hours, another 7 hours, another 6 hours and the fourth only 2 hours. What is the total amount the carpenter paid?

379 × 37 __________________

3,157 1,238 + 520 __________________

A contractor hired five carpenters to work 8 hours per day for 3 days and four carpenters to work 5 hours for 2 day. What is the total number of hours they worked?

4473 ÷ 71 =