Вправи 601 - 750 » 662-663

662. Обчисли: 102 = 100; 202 = 400; 302 = 900; 402 = 1600; 502 = 2500; 602 = 3600; 702 = 4900; 802 = 6400; 902 = 8100. 663. Обчисли: 1002 = 10000; 2002 = 40000; 3002 = 90000; 4002 = 160000; 5002 = 250000; 6002 = 360000; 7002 = 490000.