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People's Education Press, Grade 6 Mathematics, Volume 1, Page 1 16, Question 4, How to use equations?
( 1)

Number of incorrect answers: (10× 8-64) ÷ (10+6) =1.

Number of correct answers: 8- 1=7.

(2)

Number of incorrect answers: (10×10-36) ÷ (10+6) = 4.

(3)

Number of wrong answers: (10×16-16) ÷ (10+6) = 9.

Number of correct answers: 16-9=7.