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Percentuali
Matematica
Middle School Math
Percentuali

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Name _____________________________

Date ___________________

Percentuale
Completa.

1.	*Questa è una scheda preparata. Utilizza il link nella parte superiore della pagina per ottenere una pagina stampabile.

2.	There is a herd of ibex (kind of like antelope) out on the range. Forty-seven percent of the ibex are male. If the herd consists of1,096individuals, how many are female?

Completa.

Il numero di coyote nell'area attorno a Big Town è cambiato nel corso degli anni. Durante l'ultima verifica, che è stata fatta due anni fa, si stimava ci fossero630coyote. La verifica più recente indica che la popolazione di coyote è aumentata del5%. Se ciò è vero, qual è una buona stima per il numero dei coyote attualmente attorno a Big Town?

2.	Seventy percent of the animals in Big Range national park are herbivores. If there are807animali nel parco, quanti non sono erbivori? Arrotonda la tua risposta al numero intero più vicino.

Completa.

1.	A soil sample from Mr. Bloop's farm was sent to the county agriculture department for analysis. It was found to consist of23% sand,21.5% silt,28.7% clay,5% gravel and the rest was humus. What percent of the sample was humus?

A geyser (Big Bill they call it) in Thermal Park erupts a column of water22alti piedi tutti19minutes. Another geyser in the park (called Mighty Joe) erupts a column76alti piedi tutti25minutes. The eruption cycle of Mighty Joe is what percent longer than that of Big Bill? Round your answer to the nearest hundredth of a percent.

Key #2

Completa.

1.	Mr. Bloop drives17kilometri ad una velcoità media di54km/hr. Mrs. Bloop drives the same distance at an average speed that is2% faster than Mr. Bloop's. How long does it take her to travel the 17 km distance? Round your answer to the nearest hundredth of a minute.

2.	Racer Joe made four laps around Smallville racetrack with an average speed of178.7miles per hour. Speedy Bob made a set of four laps with an average speed of204.2miles per hour. Bob's speed was what percent of Joe's speed? Round your answer to the nearest hundredth of a percent.

Completa.

Jacob and Kaylee were working as partners on a chemistry experiment. They had just synthesized a white crystalline compound that precipitated to the bottom of the beaker. They weighed the compound (after drying it) and found they had6.52grammi. Secondo il loro istruttore il massimo rendimento per l'esperimento era8.78grammi. Quale percentuale del massimo hanno raggiunto? Arrotonda la tua risposta al centesimo della percentuale più vicino.

Sarah is concentrating a sample by distillation. She started with120ml di una soluzione che era circa0.09% inorganic salts. After several hours of distillation the amount of inorganics salts hasn't changed, but the volume had been decreased to54ml. What percent of the solution after distillation is inorganic salts? Round your answer to the nearest hundredth of a percent.

Completa.

1.	Grace is a good scorer for her soccer team. She scored10goals during regular play, and she scored3on penalty kicks. What percent of her goals did not result from penalty kicks? Round your answer to the nearest tenth of a percent.

2.	Devin won90percent of his wresting matches this year and came in third at the state tournament. If he competed in26matches over the course of the season (including the state tournament), how many did he lose?

Answer Key

Sample
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Percentuali
Matematica
Middle School Math
Percentuali

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