Ответ:

  1. −2.81 + (−54.6) = −2.81 − 54.6 = −57.41.
  2. −106.26 − (−8.33) = −106.26 + 8.33 = −97.93.
  3. (−3 + 41) + 40.1 = 38 + 40.1 = 78.1.
  4. 8.76 − (−2.14) = 8.76 + 2.14 = 10.9.
  5. 60.2 − 29.4 + (−10.3) = 30.8 − 10.3 = 20.5.
  6. 15.98 − (−1.61) + (−3.6) = 15.98 + 1.61 − 3.6 = 17.59 − 3.6 = 13.99.