Numbers "r" Us crossword puzzle

1234567891011
Across
  1. 4. a + 32 = 60
  2. 7. 77 + t = 151
  3. 8. 40 = p + 16
  4. 9. 75 = m + 38
  5. 10. w + 52 = 81
  6. 11. x + 15 = 47
Down
  1. 1. b + 96 = 153
  2. 2. z + 89 = 106
  3. 3. 57 + z = 71
  4. 5. 29 = 18 + c
  5. 6. 31 + n = 75