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Middle School Math Matemáticas Decimales

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Name _____________________________

Date ___________________

Decimales
Completa.

1.   Samuel bought a new shirt for his father. The shirt cost$18.71. Samuel gave the clerk a twenty-dollar bill. How much change did he get?

2.   Jordan and Matthew took their father to a restaurant on Father's Day. Jordan's lunch cost$7.22, Matthew's lunch cost$7.89, their father's lunch cost$6.32, and they left a$4.35tip. How much did their meal cost in all?

Completa.

3.   The students at Maryville High School were challenged to join the Great American Smokeout.One-fourthof the students signed a pledge saying they would not smoke on November 20.Mediaof the students promised to talk to someone who smoked about the dangers of smoking. The rest of the students didn't participate. There are one thousand, seventy students at MHS. How many of the students didn't participate in the Great American Smokeout?

4.   At the beginning of March, Austin weighed130.6pounds. He didn't mind because he was tall. At the end of the month he weighed150.12pounds. He said that was too much weight for his height. How much did Austin's weight increase in March?

Completa.

5.   Columbus would have taken some live animals aboard for food sources. If there were one hundred thirty-four animals, of which eighty-nine were rabbits and the rest were chickens, what percentage of the animals were chickens? Round your answer the nearest percent.

6.   The herds are split up as follows: At Mamie's pasture:17cows,11heifers,7calves At McLeod's pasture:15cows,6calves,1bull At Mary Lou's pasture:17cows,15calves,1bull At Nadine's pasture:13calves Cows make up what percentage of all the animals in these four pastures? Round your answer to the nearest percent.

Key #2

Completa.

7.   Rebecca's husband gave her a diamond necklace for her birthday. She loved the gem so much that she thought she would buy a bracelet and earrings to match. The bracelet cost four times as much as the earrings. The earrings cost$99.48. How much did the bracelet cost?

8.   Ms. Martin is the librarian at Mountain Springs Library. She has chosen one hundred sixty-one new books for the library. If the average cost per book is$14.62, approximately how much will the new books cost?

Completa.

9.   Ana Maria has applied for United States citizenship. She has studied American history and government for a long time and thinks she is ready to take the citizenship test. When she took the practice test online she answered thirty-nine questions correctly and only missed two. What percent of the questions did she get right?

10.   According to the 1990 census, approximately five percent of the adults in the United States did not have at least six years of education and were considered illiterate. The population of the United States in 1990 was248,709,873. Approximately how many adults in the United States had not finished at least six years of education?

Completa.

11.   Pure water boils at 100C at sea level. Now you may recall that if a solute is added to water it increases the boiling point slightly. One day, Anthony decided to see if this was really true (he didn't believe it). He added some salt to a beaker of water and used an accurate thermometer to measure the temperature at which the water boiled. He found that the boiling point was raised to101.6C. He had measured the boiling point of pure water earlier and found it to be99.7C by his thermometer. How manyC did the boiling point increase in his experiment?

12.   Shelby has to add some medicine to her aquarium. Several fish have a fuzzy growth around their mouths. The medicine bottle says to put0.3ml for every gallon of water in the tank. She has a40-gallon tank. How much medicine should she add?

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Answer Key

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Sample
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suscriptores de edHelper - Cree un imprimible nuevo Clave también incluye las preguntas La hoja de respuestas sólo da las respuestas Sin clave de respuestas Not a subscriber?  Sign up now for the subscriber materials!

Middle School Math Matemáticas Decimales

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This worksheet still contains English.
edHelper is working on the translation