Задача Задача №3328796
А
А
789
Calculation: 700 + 80 = 780, and 780 + 9 = 789. If you want more practice problems or tips for mental math, I can help.
789
Calculation: 700 + 80 = 780, and 780 + 9 = 789. If you want more practice problems or tips for mental math, I can help.