1°=60'
1°=3600"
1'=60"
a)54°28'33" + 19°37'31"=73°65'64"=73°66'4"=74°6'4"
b)13°38'43" + 25°39'25"=38°77'68"=38°78'8"=39°18'8"=
c)13°553'18" - 62°39'35"=22°13'18" - 62°39'35"= - (40° 26' 17")
d)73°26'15" - 15°42'31"=73°25'75" - 15°42'31"=72°85'75" - 15°42'31"=
=57°43'44"
e)34°41'11" × 5=170°205'55"=173°25'55"
f)7 × 17°10'11"=119°70'77"=119°71'17"=120°11'17"
g)123°29'30" : 2 =122°89'30" : 2 =122°88'90" : 2 =61°44'45"