4.4*5.5-44-0.33-0.44*22
=4.4×(5.5-2.2)-44-0.33
=4.4×3.3-44-0.33
=3.3×(4.4-0.1)-44
=3.3×4.3-44
=11×(1.29-4)
=11×(-2.71)
=(10+1)×(-2.71)
=-27.1-2.71
=-29.81