1. 370 600-(15.10 + 15.20) (70–58) · (32 +68) - 90 40. (16+14) -350:50

1.
* (600 - \(15 \cdot 10 + 15 \cdot 20\)) = (600 - (150 + 300)) = (600 - 450) = **150**
* ((70 - 58) \(\cdot\) (32 + 68) - 90) = \(12 \cdot 100 - 90\) = (1200 - 90) = **1110**
* (40 \(\cdot\) (16 + 14) - 350 : 50) = \(40 \cdot 30 - 7\) = (1200 - 7) = **1193**