People's education edition, seventh grade, volume 2, exercises and test answers when math class reaches the standard, pages 24-29.
Answer on page 27: BDCDB Question 6: plus or minus five plus five plus five plus seven: plus or minus one-half, question 8: 8 1, question 9: minus three-fifths, question 10: 1.2 -9, .............., I can only post these and do the rest myself!