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Fill in the data in the blank of the statistical table .. Statistical table of books stored in the small bookcase of the fifth grade class in Yongfeng Primary School +00 +2065438+ 16 +05 10 +65438.
(1) The number of books per person in three classes: 180÷40=4.5 (Ben),

(2) The book collection of Class 4, Grade 5: 6×39=234 (volumes),

(3) The total number of fifth-grade students:171÷÷÷4.5+38+40+39 =155 (people),

(4) The total number of fifth grade albums:190+171+180+234 = 775 (books),

(5) The average amount of books in fifth grade: 775÷ 155=5 (books),

So the answer is:155,775,5; 4.5; 234.

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