Вправи 301 - 400 » 392

5 • 6 + 6 • 16 = 30 + 6 • 10 + 6 • 6 = 30 + 60 + 36 = 90 + 36 = 126 678 – 8 • 12 = 678 – (8 • 10 + 8 • 2) = 678 – 80 – 16 = 598 – 16 = 582 22 • 4 + 347 = 20 • 4 + 2 • 4 + 347 = 80 + 8 + 347 = 427 + 8 = 435