2) 400:100.5 =, 320-20-60 = 200*3+360 =, 420+80-30 =

2. Вычислим:

1. \( 400 : 100 \cdot 5 = 4 \cdot 5 = 20 \)


2. \( 320 - 20 - 60 = 300 - 60 = 240 \)


3. \( 200 \cdot 3 + 360 = 600 + 360 = 960 \)


4. \( 420 + 80 - 30 = 500 - 30 = 470 \)

Ответ: 20, 240, 960, 470.