Question

初一拖式计算

要过程答案
（-25）+34+156+（-65)
=
=
=
=

(-42）+57+(-84)+(-23)
=
=
=
=
=
(-301)+125+301=（-75）
=
=
=
=
=
41+（-23）+(-31)+0
=
=
=
=
=

Answer 1

（-25）+34+156+（-65)
=34+156-65-25
=34+156-90
=190-90
=100

(-42）+57+(-84)+(-23)
=57-84-23-42
=57-84-65
=57-65-84
=-8-84
=-92

(-301)+125+301 +(-75)
=(-301)+301+125+(-75)
=0+125-75
=50

41+(-23)+(-31)+0
=41-23-31+0
=18-31
=-13

Answer 2

1.
=-25+34+156-65
=9+156-65
=165-65
=100
2.
(-42）+57+(-84)+(-23)
=-42+57-84-23
=15-84-23
-69-23
=-102
3.
(-301)+125+301+（-75）
=-301+125+301-75
=-176+301-75
=125-75
=50
4.
41+（-23）+(-31)+0
=41-23-31+0
=18-31
=-13

Answer 3

100 -92 ? -13