一、填空题
1. $10.6° =$ $'$
2. $2.5° =$ $''$
3. $66.6' =$ $°$
4. $17' =$ $''$
5. $45°45' =$ $°$
6. $25°32' =$ $'$
7. $71.34° =$ $°$ $'$ $''$
8. $32.42° =$ $°$ $'$ $''$
9. $42°7'48'' =$ $°$
10. $54°16'12'' =$ $°$

1. 636
2. 9 000
3. 1. 11
4. 1 020
5. 45.75
6. 1 532
7. 71 20 24
8. 32 25 12
9. 42.13
10. 54.27

二、计算题
11. $38°24'+23°47'$
12. $52°59'45''-37°49'40''$
13. $32°17'53''+42°42'7''$
14. $79°38'-50°47'25''$
15. $56°17'+12°45'-16°21'$
16. $67°31'+21°17'-48°59'$
17. $180°-49°35'-51°42'$
18. $123°24'-60°36'$(结果用度表示)
19. $108°18'36''-56.5°$
20. $150.6°-(30°26'+59°48')$

11. 62°11'
12. 15°10'5''
13. 75°
14. 28°50'35''
15. 52°41'
16. 39°49'
17. 78°43'
18. 62.8°
19. 51°48'36''
20. 60°22'