a)3,75-2:0,25+1,4×3,55+1,2³=
=3,75-8+4,97+1,728=
=10,448-8=
=2,448
b)6,24:0,4+7,65 × 20 -1.000 × 0,01 × 5² =
=15,6+153 -10 × 25 =
=15,6+153 -250 =
=-81,4
c)3 intreg 1/4 ×2 intreg 5/8-15 intreg 1/2 : 3 intreg 3/4+6,(2) × 9/23-11²×10²=
=13/4 ×21/8-31/2 : 15/4+(62-6)/9 × 9/23-11²×10²=
=13/4 ×21/8-31/2 ×4/15+56/9 × 9/23-12100=
=273/32-124/30+56/23-12100=
=273/32-124/30+56/23-12100=
=(94185-45632+26880-)/11040-12100=
=75433/11040-12100 ≈12093,1673
d)4,1(15) ×99 -13,(12) × 100² +16,0(21) ×10.000
=
=(4115-41)/990 ×99 -(1312-13)/99 × 100² +(16021-160)/990 ×10.000
=
=4074/10 -12990000/99 +15861000/99
=
=(403326-129900000+158610000)/990=
=29113326/990=29407,4