I gimnazjum

Matematyka wokół nas 1

Sklep Grono: 2⋅3+0,5⋅11+0,75⋅3,20=6+5,5+2,4=13,9

13,50⋅4=54

80⋅3,40+24⋅7,65+12⋅4,55+60=272+183,6+54,6+60=570,2 &nbsp;

a)&nbsp; 43​⋅(32−2⋅271​⋅1,6⋅231​)= 43​⋅(32−2⋅715​⋅58​⋅37​)=

(521​−21​)⋅0,15+0,85=5⋅0,15+0,85=0,75+0,85=1,6

a)&nbsp; 541​⋅(211​+71​)+3=421​⋅(211​+213​)+3=

a) &nbsp;&nbsp; (1−21​)⋅(1−31​)⋅(1−41​)=211​⋅3121​⋅431​=41​