ІІ ЧАСТИНА. I. Тисяча » 249-250
250. 620 + 110 = 730; 555 + 333 = 888; 940 + 30 = 970; 555 – 333 = 222; 860 – 40 = 820; 820 + 80 = 900.
250. 620 + 110 = 730; 555 + 333 = 888; 940 + 30 = 970; 555 – 333 = 222; 860 – 40 = 820; 820 + 80 = 900.