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(1)(-25)+34+156+(-65)
=(34+156)-(25+65)
=190-90
=100
(2)(-64)+17+(-23)+68
=(17+68)-(64+23)
=85-87
=-2
(3)(-42)+57+(-84)+(-23)
=57-(42+84+23)
=57-149
=-92
(4)63+72+(-96)+(-37)
=(63+72)-(96+37)
=135-133
=2
(5)(-301)+125+301+(-75)
=(125+301)-(301+75)
=426-376
=50
(6)(-52)+24+(-74)+12
=(24+12)-(52+74)
=36-126
=-90
(7)41+(-23)+(-31)+0
=(41+0)-(23+31)
=41-54
=-13
(8)(-26)+52+16+(-72)
=(52+16)-(26+72)
=68-98
=-30
=(34+156)-(25+65)
=190-90
=100
(2)(-64)+17+(-23)+68
=(17+68)-(64+23)
=85-87
=-2
(3)(-42)+57+(-84)+(-23)
=57-(42+84+23)
=57-149
=-92
(4)63+72+(-96)+(-37)
=(63+72)-(96+37)
=135-133
=2
(5)(-301)+125+301+(-75)
=(125+301)-(301+75)
=426-376
=50
(6)(-52)+24+(-74)+12
=(24+12)-(52+74)
=36-126
=-90
(7)41+(-23)+(-31)+0
=(41+0)-(23+31)
=41-54
=-13
(8)(-26)+52+16+(-72)
=(52+16)-(26+72)
=68-98
=-30
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