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Fracciones
Matemáticas
Middle School Math
Fracciones

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Name _____________________________
Date ___________________
Fracciones
Completa.

1.  In examining a series of sediment layers in a canyon near the new BigTown geodesic dome, Kyle has been studying many layers of shale. He recently mapped all12of them. Ifmediade las capas tienen más de300millones de años, ¿cuántas capas son más jóvenes que300millones de años?

2.  El Sr. Bloop está haciendo una demostración usando un abrevadero. Este es un artefacto usado para observar (entre otras cosas) la acción del agua en los sedimentos. Él empezó con una velocidad de flujo deone and two-thirdsgallons per minute (gpm) and every thirty seconds he halved the rate. Throughout the demonstration the students watched small marked stones move down the trough. What was the flow rate (in gpm) after he halved the rate four times? Express your answer as a fraction.

3.  Feldspar is a common mineral on earth. By some estimates, feldspar makes upthree-fifthsof the mineral mass in the crust. Convert this fraction to a percent.

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5.  En la convención de geólogos1/3of the people are students,1/6son profesores y1/6are industry representatives. The rest are employees of the convention center. If there are336people at the convention, how many are employees of the center?

6.  A new island has formed off the coast of Bay City, which is not unexpected since it is near a subduction zone. The island is currently about2km2. How many years would it take for the island to increase its area by one-half through volcanic activity if it expands at a rate ofone-eighthof a square kilometer each year?



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suscriptores de edHelper - Cree un imprimible nuevo
Clave también incluye las preguntas
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Fracciones
Matemáticas
Middle School Math
Fracciones

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