221. Вычисли: 23 000 + 25; 18 000 + 350; 37 000 + 480; 7 050 − 7 000; 6 080 − 6 000; 8 090 − 8 040.

\(23\,000 + 25 = 23\,025\).

\(18\,000 + 350 = 18\,350\).

\(37\,000 + 480 = 37\,480\).

\(7\,050 - 7\,000 = 50\).

\(6\,080 - 6\,000 = 80\).

\(8\,090 - 8\,040 = 50\).