Question

Calculează, respectând ordinea operațiilor:
•(27×4+19×3)-5×17=
•69:(83-20×4)+144=
•800-(46:2×10+70=
•100×(22×2:4-4:4)=

Answer 1

(27×4+19×3)-5×17=
=(108+57)-85
=165-85
=80
69:(83-20×4)+144=
=69:(83-80)+144
=69:3+144
=23+144
=167
800-(46:2×10)+70=
=800-(23×10)+70
=800-230+70
=570+70
=640
100×(22×2:4-4:4)=
=100×(44:4-1)
=100×11-1
=1.101-1
=1.099

Answer 2

(27×4+19×3)-5×17=
(108+57-85)=80

69:(83-20×4)+144=
23+ 144=167

800-(46:2×10+70)=
800-(230+70)=
800-300=500

100×(22×2÷4-4÷4)=
100×(44÷4-1)=
100×10=1000