二年级脱式计算怎么写,74+16-53= 63+27-15= 100-(34+26)= 95-(64-37)= 73-58+9= 20(71-35)=

如题所述

按顺序算
74+16-53
=90-53
=37

63+27-15
=90-15
=75

100-(34+26)
=100-60
=4

95-(64-37)
=95-27
=68

73-58+9
=15+9
=24

如果是20+(71-35) :
20+(71-35)
=20+36
=56

[如果是20(71-35):
20(71-35)
=20×71-20×35
=1420-700
=720
(不过二年级不可能这样的题型)]

谢谢,望采纳!
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第1个回答  2013-01-03
74+16-53
=90-53
=37
63+27-15
=90-15
=75
100-(34+26)
=100-60
=40
95-(64-37)
=95-27
=68
73-58+9
=15+9
=24
20+(71-35)
=20+36
=56本回答被网友采纳
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