| 79. | Senor Calvino is a historian in Rome. He goes to the Roman Coliseum four times a week. How many times will he visit the Coliseum during nine weeks?
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| | 80. | We went to the circus to watch the master juggler. We had seen him on television, but not in person. Under the hot lights of the tent he juggled balls, plates, and bowling pins. His last act was to juggle chain saws. It was an amazing performance. Crowds filled the tent every night. By the time of his final act on the last night of the circus, he had juggled for forty-two minutes four nights in a row. How long did he juggle in all?
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