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Middle School Math
Math
Decimals

 

Name _____________________________
Date ___________________
Decimals
Complete.

1.   Robert bought a very large star map for his bedroom wall. The map is round. Its radius is four feet. What is the circumference and area of the wall map?

2.   Cyrano de Bergerac had a prominent nose. As a matter of fact, it was so large that it was often the only thing people noticed about him. If one had to choose an adjective to describe Cyrano's nose, the best would be "tremendous!" Cyrano fell in love with a beautiful young woman, but knew she could never love someone so ugly. It's a long story, but in the end, Cyrano discovered that he was wrong. The young woman did love him. Cyrano's nose was sixteen centimeters long. 1 cm = 0.39 in. How long was Cyrano's nose in inches? Round off your answer to the nearest tenth of an inch.

3.   Lauren and Nathan are planning a garden. Lauren said if they make the garden round it would look better. Nathan said if they make the garden square they will be able to plant more. They have enough space to make a round garden with a diameter of twelve feet or a square garden with each side being twelve feet. If they put three plants in each square foot of ground, how many more plants will they be able to plant in the square garden than they could plant in the round garden?

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5.   Clarita's sister works in an American company in Amarillo, Texas. She works forty-five hours every week and is paid $12.82 per hour. She sends two-thirds of her weekly salary to Clarita to take care of their mother. How much money does Clarita's sister send home each week?

6.   Christian was using an electronic tuner (of his own design) to check the tuning of his cousin's guitar. He had previously tuned the guitar using a tone on a recording so that the A string vibrated at exactly 440 Hz (440 cycles per second). Now when he checked it using his tuner, the tuner indicated that the string was vibrating at 443.3 Hz. Assuming the string was actually tuned to 440 Hz, what was the percent error in his tuner? Round your answer to the nearest hundredth of a percent.


 


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Middle School Math
Math
Decimals