Частина 1. Номер 402

7189 – 100 – 80 = 7089 – 80 = 7009;

9072 – 2 – 9000 = 9070 – 9000 = 70;

14290 – 4000 – 90 = 10290 – 90 = 10200;

23307 – 20000 – 300 = 3307 – 300 = 3007;

150002 – (50002 – 2) = 150002 – 50000 = 100002;

41380 – (1380 – 300) = 41380 – 1080 = 40300.