Задача Задача №3606881
А
А
40+50
90
Tip: 40 + 50 = (4×10) + (5×10) = (4+5)×10 = 9×10 = 90. Want more quick addition tricks or similar problems?
Мобильные приложения
90
Tip: 40 + 50 = (4×10) + (5×10) = (4+5)×10 = 9×10 = 90. Want more quick addition tricks or similar problems?
Мобильные приложения