4. 116\(\cdot\)6, 492\(\cdot\)2, 436+280, 725+175, 90+854, 612-97, 420-120:3, 280+60\(\cdot\)2

Решение:

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