👤

indica ordinea efectuarii operatiilor , apoi calculeaza 20 - 2 ×4 + 9 × 6 = ; 40: 2 - 5 × 3 + 81 : 9 =; (42 × 2 - 48 : 2) :10 =; (32 -10 ×3) × (0: 9 +50) =; (10 × 7 +2) : 8-9 ×(6-6:6):9+2×2×2×2=

Răspuns :

20-2·4+9·6=
=20-8+54=
=66

40÷2-5·3+81=
=20-15+81=
=86

(42·2-48÷2)÷10=
=(84-24)÷10=
=60÷10=
=6

(32-10·3)·(0÷9+50)=
=2·50=
=100



Se fac mai intai inmultirile si impartirile apoi adunarile.Si se fac mai intai parantezele rotunde.
20-2x4+9x6=
20-8+54=
12+54=
66

40:2-5x3+81:9=
20-15+9=
5+9=
14

(42x2-48:2):10=
(84-24):10=
60:10=
6

(32-10x3)x(0:9+50)=
(32-30)x(0+50)=
2x50=
100

(10x7+2):8-9x(6-6:6):9+2x2x2x2=
(70+2):8-9x(6-1):9+4x2x2=
72:8-9x5:9+8x2=
9-45:9+16=
9-5+16=
4+16=
20