The singular form is una libreta
Well, your question is "How" do you answer the question, so I won't give you the answers (because I have no clue anyways)
Your simply answer 7-15 by filling in the missing word in the box. The sentences are missing words, and you have to find the correct form of that word that fits the sentence and makes it complete. In spanish, of course.
~Hope this helps!
I don’t understand do you have to translate the word???
Answer:
At one warehouse, 127 delivery trucks with 48 packages were loaded onto each truck. How many packages were loaded on each truck?