2. A person bought 1 13 chickens at 50 cents each, and bought 10 chickens and gave them to 1. How much is a * * *?
3. We like math
x
study
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Okay, okay, okay, okay.
The school bought some notebooks and distributed them to all classes in grade four. There are more than 3 books in each class, 5 books in each class, and 5 books are missing. How many classes are there in Grade Four?
How many notebooks did you buy?
5. Three students, a\b\c, went fishing and were tired.
They fell asleep, then A woke up and left three fish, B woke up and left three fish, C woke up and left three fish, and finally there were eight fish left.
I didn't know the fish were unreasonable until the next day, so I let the remaining eight fish go.
Three to B and five to C.
Excuse me, how many fish are there? ...
6. Put three identical cubes together to form a cuboid, and you know that its surface area is the sum of the surface areas of the original three cubes.
A small part? If four identical cubes are used to form a cuboid, its surface area will increase again.
What is the fraction of the sum of the surface areas of the original four cubes?