4. 116 ⋅ 6 492 ⋅ 2 436 + 280 725 + 175 90 + 854 612 − 97 420 − 120 : 3 280 + 60 ⋅ 2

Пошаговое решение:

• \[ 116 \cdot 6 = 696 \]
• \[ 492 \cdot 2 = 984 \]
• \[ 436 + 280 = 716 \]
• \[ 725 + 175 = 900 \]
• \[ 90 + 854 = 944 \]
• \[ 612 - 97 = 515 \]
• \[ 420 - 120 : 3 = 420 - 40 = 380 \]
• \[ 280 + 60 \cdot 2 = 280 + 120 = 400 \]