| 1. |
Brandon went to the zoo store to buy some books about endangered animals. He bought three books (Asian Elephants, $3.10; Snow Leopards, $6.07; and Manatees, $4.15). He gave the clerk $20.00. How much change should he get?
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| 2. |
John read a book about Asian elephants. Asian elephants are an endangered species. There are about fifty-one thousand Asian elephants in the wild and about fourteen thousand in captivity. About how many Asian elephants are there in the world?
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| 3. |
In 1980 there were about fifteen thousand black rhinoceroses in the world. Now scientists believe there are only two thousand, five hundred left. How many fewer black rhinos are there now than there were in 1980?
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| 4. |
The students in Ms. Wilson's class volunteered to clean up the park for Earth Day. On Monday the class worked from 9:53 a.m. until 11:17 a.m. On Tuesday the class worked from 1:40 p.m. until 2:42 p.m. On Wednesday the class worked from 11:46 a.m. until 1:02 p.m. How long did the class work in all?
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| 5. |
Brittany wrote a report about black-footed ferrets for Earth Day. By the 1970s people thought black-footed ferrets were extinct, but a few had survived. In 1981 one hundred twenty-nine of the ferrets were found near Meeteetse, Wyoming. In 1985 the number of ferrets dropped to eighteen. How many more black-footed ferrets were there in 1981 than there were in 1985?
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| 6. |
Mr. Parker's car can go thirty-seven miles on one gallon of gas. Mr. Jackson's car can go eighteen miles on one gallon of gas. If each car uses 6.9 gallons of gas, how much farther will Mr. Parker's car go than Mr. Jackson's car? (round to the nearest tenth of a mile)
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