问题标题:
几道数学题,(计算)1.37°49’+44°28’2.108°18’-56.5°3.89°35’+20°25’4.123°24’-60°36’
问题描述:

几道数学题,(计算)

1.37°49’+44°28’

2.108°18’-56.5°

3.89°35’+20°25’

4.123°24’-60°36’

金坚回答:
  1.37°49’+44°28’   =81°77’   =82°17’   2.108°18’-56.5°   =108°18’-56°30’   =107°78’-56°30’   =51°48’   3.89°35’+20°25’   =109°60’   =110°   4.123°24’-60°36’   =122°84’-60°36’   =62°48’
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