Heath and Jaydon liked birdwatching and kept track of how many different species they saw at each site. In one day, they visited 5 different sites and saw an average of 7 species at each site. The day before, they saw 30 different species at 6 different sites. How many fewer species did they see at each site the day before?
 

Lilah's band had practices 24 songs. At a performance, they played 7 songs in their first sent and 8 songs in their second set. How many songs did they have for their third set, if they had to save one song for an encore? 
 

Kelley belonged to a canoe club that had 18 canoes. They kept canoes on trailers, each able to carry canoes 2 wide and 3 high. If they had enough trailers for all of their canoes, how many trailers did they have?

 

In Science class, Sara needed 8 test tubes for 3 different experiments. The first equipment required 2 test tubes and the other two experiments required the same number of test tubes. How many test tubes were needed for each of the other two experiments? 

 

While Gideon was camping with his family for a week, it rained for 3 days. When he looked at the weather records, he saw that the amount of rain was 3 mm, 6 mm, and 5 mm on the three days. During the same week, it rained 26 mm at his house. How much less rain did he experience while camping?