Задача Задача №3528979
А
А
440
If you want a quick check: 220 + 220 = (22 × 10) + (22 × 10) = (22 + 22) × 10 = 44 × 10 = 440. Want more quick addition tricks or similar practice?
440
If you want a quick check: 220 + 220 = (22 × 10) + (22 × 10) = (22 + 22) × 10 = 44 × 10 = 440. Want more quick addition tricks or similar practice?