Răspuns: 4600
Explicație pas cu pas:
Cine a lucrat corect:
Varianta 1: [(680 : 20 + 4 × (2 + 12 : 12)] × 100 = 4600
sau
Varianta 2: [(680 : 20 + 4 × (2 + 12 : 12)] × 100 = 11400
[(680 : 20 + 4 × (2 + 12 : 12)] × 100 =
[(680 : 20 + 4 × (2 + 1)] × 100 =
(680 : 20 + 4 × 3) × 100 =
(680 : 20 + 12) × 100 =
(34 + 12) × 100 =
46 × 100 =
Varianta 1 este corecta