Частина 2. Номер 59
700 – 300 = 400;
900 – 400 = 500;
800 + 1 = 801;
800 – 1 = 799;
400 + 20 = 420;
600 + 40 = 640;
500 + 3 = 503;
800 + 4 = 804.
700 – 300 = 400;
900 – 400 = 500;
800 + 1 = 801;
800 – 1 = 799;
400 + 20 = 420;
600 + 40 = 640;
500 + 3 = 503;
800 + 4 = 804.